The period, which is now known Renaissance, is associated with the names of various painters, thinkers, sculptors, and scientists who contributed to the development of arts and the growth of scientific knowledge. Nicholas of Cusa, who is also known as Casunus, can also be viewed as a prominent representative of Renaissance humanism (Koetsier 270). This paper is aimed at discussing the implications of his works for the scientific community. Much attention should be paid to the ideas that he expressed about astronomy. One can argue that many of his ideas could go unnoticed by his contemporaries. In many cases, his conjectures were not based on empirical evidence. This is one of the main aspects that can be singled out. However, his ideas proved to be insightful and far-reaching. They played an important role for scientists who studied physics, cosmology, and mathematics. His hypotheses were confirmed only in later centuries. This is one of the main aspects that can be identified. The discussion of these questions is important for understanding the development of science during the Renaissance. First, it should be noted that Nicholas of Cusa took an interest in various areas of study. For instance, one can mention theology, mathematics, philosophy, astronomy, and jurisprudence. One can argue that he was a very many-sided person who did not focus only on one narrow task. During his lifetime, he worked on various problems. Some of them attracted the attention of mathematicians during the following centuries. For instance, he was interested in such a task as squaring the circle (Koetsier 270). Nicholas of Cusa tried to continue the work of numerous ancient geometers such as Pythagoras or Euclid. Only in the nineteenth century, mathematicians demonstrated that this problem was impossible to resolve. However, the work of Nicholas of Cusa proved to be very influential because it inspired many people who were interested in geometry. This is why his scientific activities should not be underestimated. Apart from that, this thinker made an important contribution to medical science. For instance, he suggested that the pulse rate could be an important measurement of a person’s health (Reiser 96). He believed that the water clock could be used to measure this rate (Reiser, 96). At present, this idea seems to be almost self-evident to medical workers. However, in the fifteenth century, this recommendation could be regarded as a significant breakthrough. It should be taken into account that the thoughts of Cusanus were rediscovered only during later periods when scientists elaborated on their research methods. In turn, in the fifteenth century, this suggestion was not readily accepted by others, especially physicians. This is one of the main issues that should be taken into account. It should also be mentioned that Casunus proved to be an influential inventor. In particular, he is credited with the invention of a hygrometer, which could measure the quantity of water in the air (Rezende 81). Certainly, in the course of history, this device has been modified for a great number of times. Conventional hygrometers bear virtually no resemblance to the invention of Casunus. They are much more accurate (Rezende, 81).