title: Karl Popper
paragraph_text: Knowledge, for Popper, was objective, both in the sense that it is objectively true (or truthlike), and also in the sense that knowledge has an ontological status (i.e., knowledge as object) independent of the knowing subject (Objective Knowledge: An Evolutionary Approach, 1972). He proposed three worlds: World One, being the physical world, or physical states; World Two, being the world of mind, or mental states, ideas, and perceptions; and World Three, being the body of human knowledge expressed in its manifold forms, or the products of the second world made manifest in the materials of the first world (i.e., books, papers, paintings, symphonies, and all the products of the human mind). World Three, he argued, was the product of individual human beings in exactly the same sense that an animal path is the product of individual animals, and that, as such, has an existence and evolution independent of any individual knowing subjects. The influence of World Three, in his view, on the individual human mind (World Two) is at least as strong as the influence of World One. In other words, the knowledge held by a given individual mind owes at least as much to the total accumulated wealth of human knowledge, made manifest, as to the world of direct experience. As such, the growth of human knowledge could be said to be a function of the independent evolution of World Three. Many contemporary philosophers, such as Daniel Dennett, have not embraced Popper's Three World conjecture, due mostly, it seems, to its resemblance to mind-body dualism.
title: A Treatise Concerning the Principles of Human Knowledge
paragraph_text: A Treatise Concerning the Principles of Human Knowledge (commonly called Treatise when referring to Berkeley's works) is a 1710 work, in English, by Irish Empiricist philosopher George Berkeley. This book largely seeks to refute the claims made by Berkeley's contemporary John Locke about the nature of human perception. Whilst, like all the Empiricist philosophers, both Locke and Berkeley agreed that we are having experiences, regardless of whether material objects exist, Berkeley sought to prove that the outside world (the world which causes the ideas one has within one's mind) is also composed "solely" of ideas. Berkeley did this by suggesting that "Ideas can only resemble Ideas" – the mental ideas that we possess can only resemble other ideas (not material objects) and thus the external world consists not of physical form, but rather of ideas. This world is (or, at least, was) given logic and regularity by some other force, which Berkeley concludes is God.
title: The Children of the Company
paragraph_text: The Children of the Company is a science fiction novel by Kage Baker. It is another in the series concerned with the exploits of The Company, a 24th-century cabal which exploits history for profit with the aid of immortal cyborgs living in the past.
title: Alfred North Whitehead
paragraph_text: In addition to numerous articles on mathematics, Whitehead wrote three major books on the subject: A Treatise on Universal Algebra (1898), Principia Mathematica (co-written with Bertrand Russell and published in three volumes between 1910 and 1913), and An Introduction to Mathematics (1911). The former two books were aimed exclusively at professional mathematicians, while the latter book was intended for a larger audience, covering the history of mathematics and its philosophical foundations. Principia Mathematica in particular is regarded as one of the most important works in mathematical logic of the 20th century.
title: Responsibility to protect
paragraph_text: The norm of the R2P was borne out of the international community's failure to respond to tragedies such as the Rwandan Genocide in 1994 and the Srebrenica massacre in 1995. Kofi Annan, who was Assistant Secretary - General at the UN Department for Peacekeeping Operations during the Rwandan genocide, realized the international community's failure to respond. In the wake of the Kosovo intervention, 1999, Annan insisted that traditional notions of sovereignty had been redefined: ``States are now widely understood to be instruments at the service of their peoples '', he said, while U.S. President Bill Clinton cited human rights concerns in 46% of the hundreds of remarks that he made justifying intervention in Kosovo. In 2000, and in his capacity as UN Secretary - General, Annan wrote the report`` We the Peoples'' on the role of the United Nations in the 21st Century, and in this report he posed the following question: ``if humanitarian intervention is, indeed, an unacceptable assault on sovereignty, how should we respond to a Rwanda, to a Srebrenica -- to gross and systematic violations of human rights that offend every precept of our common humanity? ''
title: The Pacific Century
paragraph_text: The Pacific Century was a 1992 PBS Emmy Award winning ten-part documentary series narrated by Peter Coyote about the rise of the Pacific Rim economies. Alex Gibney was the writer for the series, and Frank Gibney, his father, wrote the companion trade book, "The Pacific Century: America and Asia in a Changing World". The companion college textbook, "Pacific Century: The Emergence of Modern Pacific Asia," was written and edited by E. Mark Borthwick. The series was a co-production of the Pacific Basin Institute and KCTS-TV in Seattle. Principle funding was provided by the Annenberg Foundation.
title: Nicholas J. Belkin
paragraph_text: Nicholas J. Belkin is a professor at the School of Communication and Information at Rutgers University. Among the main themes of his research are digital libraries; information-seeking behaviors; and interaction between humans and information retrieval systems. Belkin is best known for his work on human-centered Information Retrieval and the hypothesis of Anomalous State of Knowledge (ASK). Belkin realized that in many cases, users of search systems are unable to precisely formulate what they need. They miss some vital knowledge to formulate their queries. In such cases it is more suitable to attempt to describe a user's anomalous state of knowledge than to ask the user to specify her/his need as a request to the system.
title: Poverty in the Philippines
paragraph_text: The Human Development Index, as defined by the United Nations, is a summary measure of average achievement in key dimensions of human development: a long and healthy life, being knowledgeable and having a decent standard of living. For the Philippines, the HDI increased by 16.5% between 1980 and 2013. The country ranked 117 out of 187 countries in 2013. The HDI in 2013 was 0.660, which implied that the Philippines was under the medium human development group (which needs an HDI of 0.614). The nation's HDI was higher than the average for countries in the medium human development group, but lower than the average of the countries in East Asia and Pacific (0.703).
title: Pharmacy
paragraph_text: In Ancient Greece, Diocles of Carystus (4th century BC) was one of several men studying the medicinal properties of plants. He wrote several treatises on the topic. The Greek physician Pedanius Dioscorides is famous for writing a five volume book in his native Greek Περί ύλης ιατρικής in the 1st century AD. The Latin translation De Materia Medica (Concerning medical substances) was used a basis for many medieval texts, and was built upon by many middle eastern scientists during the Islamic Golden Age. The title coined the term materia medica.
title: Avicenna
paragraph_text: Avicenna was a devout Muslim and sought to reconcile rational philosophy with Islamic theology. His aim was to prove the existence of God and His creation of the world scientifically and through reason and logic. Avicenna's views on Islamic theology (and philosophy) were enormously influential, forming part of the core of the curriculum at Islamic religious schools until the 19th century. Avicenna wrote a number of short treatises dealing with Islamic theology. These included treatises on the prophets (whom he viewed as "inspired philosophers"), and also on various scientific and philosophical interpretations of the Quran, such as how Quranic cosmology corresponds to his own philosophical system. In general these treatises linked his philosophical writings to Islamic religious ideas; for example, the body's afterlife.
title: Empiricism
paragraph_text: A generation later, the Irish Anglican bishop, George Berkeley (1685–1753), determined that Locke's view immediately opened a door that would lead to eventual atheism. In response to Locke, he put forth in his Treatise Concerning the Principles of Human Knowledge (1710) an important challenge to empiricism in which things only exist either as a result of their being perceived, or by virtue of the fact that they are an entity doing the perceiving. (For Berkeley, God fills in for humans by doing the perceiving whenever humans are not around to do it.) In his text Alciphron, Berkeley maintained that any order humans may see in nature is the language or handwriting of God. Berkeley's approach to empiricism would later come to be called subjective idealism.
title: Claude Perrault
paragraph_text: Claude Perrault (25 September 1613 – 9 October 1688) was a French architect, best known for his participation in the design of the east façade of the Louvre in Paris. He also achieved success as a physician and anatomist, and as an author, who wrote treatises on physics and natural history.
title: Eutocius of Ascalon
paragraph_text: Eutocius of Ascalon (; ; 480 – 540) was a Greek mathematician who wrote commentaries on several Archimedean treatises and on the Apollonian "Conics".
title: Islamism
paragraph_text: Sayyid Abul Ala Maududi was an important early twentieth-century figure in the Islamic revival in India, and then after independence from Britain, in Pakistan. Trained as a lawyer he chose the profession of journalism, and wrote about contemporary issues and most importantly about Islam and Islamic law. Maududi founded the Jamaat-e-Islami party in 1941 and remained its leader until 1972. However, Maududi had much more impact through his writing than through his political organising. His extremely influential books (translated into many languages) placed Islam in a modern context, and influenced not only conservative ulema but liberal modernizer Islamists such as al-Faruqi, whose "Islamization of Knowledge" carried forward some of Maududi's key principles.
title: Hindu philosophy
paragraph_text: In its metaphysics, Nyāya school is closer to the Vaiśeṣika school than others. It holds that human suffering results from mistakes/defects produced by activity under wrong knowledge (notions and ignorance). Moksha (liberation), it states, is gained through right knowledge. This premise led Nyāya to concern itself with epistemology, that is the reliable means to gain correct knowledge and to remove wrong notions. False knowledge is not merely ignorance to Naiyayikas, it includes delusion. Correct knowledge is discovering and overcoming one's delusions, and understanding true nature of soul, self and reality. The Nyāya Sūtras begin:
title: Humanism
paragraph_text: Religious humanism is an integration of humanist ethical philosophy with religious rituals and beliefs that centre on human needs, interests, and abilities. Though practitioners of religious humanism did not officially organise under the name of "humanism" until the late 19th and early 20th centuries, non-theistic religions paired with human-centred ethical philosophy have a long history. The Cult of Reason (French: Culte de la Raison) was a religion based on deism devised during the French Revolution by Jacques Hébert, Pierre Gaspard Chaumette and their supporters. In 1793 during the French Revolution, the cathedral Notre Dame de Paris was turned into a "Temple to Reason" and for a time Lady Liberty replaced the Virgin Mary on several altars. In the 1850s, Auguste Comte, the Father of Sociology, founded Positivism, a "religion of humanity". One of the earliest forerunners of contemporary chartered humanist organisations was the Humanistic Religious Association formed in 1853 in London. This early group was democratically organised, with male and female members participating in the election of the leadership and promoted knowledge of the sciences, philosophy, and the arts. The Ethical Culture movement was founded in 1876. The movement's founder, Felix Adler, a former member of the Free Religious Association, conceived of Ethical Culture as a new religion that would retain the ethical message at the heart of all religions. Ethical Culture was religious in the sense of playing a defining role in people's lives and addressing issues of ultimate concern.
title: European Union law
paragraph_text: The principles of European Union law are rules of law which have been developed by the European Court of Justice that constitute unwritten rules which are not expressly provided for in the treaties but which affect how European Union law is interpreted and applies. In formulating these principles, the courts have drawn on a variety of sources, including: public international law and legal doctrines and principles present in the legal systems of European Union member states and in the jurisprudence of the European Court of Human Rights. Accepted general principles of European Union Law include fundamental rights (see human rights), proportionality, legal certainty, equality before the law and subsidiarity.
title: Environmental movement in the United States
paragraph_text: The early Conservation movement, which began in the late 19th century, included fisheries and wildlife management, water, soil conservation and sustainable forestry. Today it includes sustainable yield of natural resources, preservation of wilderness areas and biodiversity. The modern Environmental movement, which began in the 1960s with concern about air and water pollution, became broader in scope to including all landscapes and human activities. See List of environmental issues. Environmental health movement dating at least to Progressive Era (1890s - 1920s) urban reforms including clean water supply, more efficient removal of raw sewage and reduction in crowded and unsanitary living conditions. Today Environmental health is more related to nutrition, preventive medicine, aging well and other concerns specific to the human body's well - being. Sustainability movement which started in the 1980s focused on Gaia theory, value of Earth and other interrelations between human sciences and human responsibilities. Its spinoff Deep Ecology was more spiritual but often claimed to be science. Environmental justice is a movement that began in the U.S. in the 1980s and seeks an end to environmental racism. Often, low - income and minority communities are located close to highways, garbage dumps, and factories, where they are exposed to greater pollution and environmental health risk than the rest of the population. The Environmental Justice movement seeks to link ``social ''and`` ecological'' environmental concerns, while at the same time keeping environmentalists conscious of the dynamics in their own movement, i.e. racism, sexism, homophobia, classicism, and other malaises of dominant culture.
title: Architecture
paragraph_text: According to Vitruvius, the architect should strive to fulfill each of these three attributes as well as possible. Leon Battista Alberti, who elaborates on the ideas of Vitruvius in his treatise, De Re Aedificatoria, saw beauty primarily as a matter of proportion, although ornament also played a part. For Alberti, the rules of proportion were those that governed the idealised human figure, the Golden mean. The most important aspect of beauty was therefore an inherent part of an object, rather than something applied superficially; and was based on universal, recognisable truths. The notion of style in the arts was not developed until the 16th century, with the writing of Vasari: by the 18th century, his Lives of the Most Excellent Painters, Sculptors, and Architects had been translated into Italian, French, Spanish and English.
title: Idealism
paragraph_text: The earliest extant arguments that the world of experience is grounded in the mental derive from India and Greece. The Hindu idealists in India and the Greek Neoplatonists gave panentheistic arguments for an all-pervading consciousness as the ground or true nature of reality. In contrast, the Yogācāra school, which arose within Mahayana Buddhism in India in the 4th century CE, based its "mind-only" idealism to a greater extent on phenomenological analyses of personal experience. This turn toward the subjective anticipated empiricists such as George Berkeley, who revived idealism in 18th-century Europe by employing skeptical arguments against materialism.

Question: What century did the author of "Treatise Concerning the Principles of Human Knowldege" live in?

Question decomposition:
question: Who wrote 'Treatise Concerning the Principles of Human Knowledge'?
answer: George Berkeley
question: What century did #1 live in?
answer: 18th

Answer: 18th
Answer aliases: 18th-century
18th century