Please answer the following question: Information: - Walden (first published as Walden; or, Life in the Woods) is a book by noted transcendentalist Henry David Thoreau. The text is a reflection upon simple living in natural surroundings. The work is part personal declaration of independence, social experiment, voyage of spiritual discovery, satire, and (to some degree) manual for self-reliance. - A historian is a person who researches, studies, and writes about the past, and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human race; as well as the study of all history in time. If the individual is concerned with events preceding written history, the individual is a historian of prehistory. Although "historian" can be used to describe amateur and professional historians alike, it is reserved more recently for those who have acquired graduate degrees in the discipline. Some historians, though, are recognized by publications or training and experience. "Historian" became a professional occupation in the late nineteenth century as research universities were emerging in Germany and elsewhere. - Henry David Thoreau (see name pronunciation; July 12, 1817 May 6, 1862) was an American essayist, poet, philosopher, abolitionist, naturalist, tax resister, development critic, surveyor, and historian. A leading transcendentalist, Thoreau is best known for his book "Walden", a reflection upon simple living in natural surroundings, and his essay "Civil Disobedience" (originally published as "Resistance to Civil Government"), an argument for disobedience to an unjust state. - A philosopher is someone who practices philosophy, which involves rational inquiry into areas that are outside of either theology or science. The term "philosopher" comes from the Ancient Greek ("philosophos") meaning "lover of wisdom". The coining of the term has been attributed to the Greek thinker Pythagoras (6th century BC). - An essay is, generally, a piece of writing that gives the author's own argument but the definition is vague, overlapping with those of an article, a pamphlet, and a short story. Essays have traditionally been sub-classified as formal and informal. Formal essays are characterized by "serious purpose, dignity, logical organization, length," whereas the informal essay is characterized by "the personal element (self-revelation, individual tastes and experiences, confidential manner), humor, graceful style, rambling structure, unconventionality or novelty of theme," etc. - A poet is a person who writes poetry. Poets may describe themselves as such or be described as such by others. A poet may simply be a writer of poetry, or may perform their art to an audience. - Henry Stephens Salt ( 20 September 1851 -- 19 April 1939 ) was an English writer and campaigner for social reform in the fields of prisons , schools , economic institutions , and the treatment of animals . He was a noted ethical vegetarian , anti-vivisectionist , socialist , and pacifist , and was well known as a literary critic , biographer , classical scholar and naturalist . It was Salt who first introduced Mohandas Gandhi to the influential works of Henry David Thoreau , and influenced Gandhi 's study of vegetarianism . Salt is credited with being the first writer to argue explicitly in favour of animal rights , in his Animals ' Rights : Considered in Relation to Social Progress ( 1894 ) , rather than focusing on improvements to animal welfare . He wrote : '' If we are ever going to do justice to the lower races , we must get rid of the antiquated notion of a ' great gulf ' fixed between them and mankind , and must recognize the common bond of humanity that unites all living beings in one universal brotherhood . '' What is the relationship between 'henry stephens salt' and 'essayist'?
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occupation