Aesthetics

Paul Klee (18 December 1879 – 29 June 1940) was a Swiss-born German artist. His highly individual style was influenced by movements in art that included Expressionism, Cubism, and Surrealism. Klee was a natural draftsman who experimented with and eventually deeply explored color theory, writing about it extensively; his lectures Writings on Form and Design Theory (Schriften zur Form und Gestaltungslehre), published in English as the Paul Klee Notebooks, are held to be as important for modern art as Leonardo da Vinci's A Treatise on Painting for the Renaissance. He and his colleague, Russian painter Wassily Kandinsky, both taught at the Bauhaus school of art, design and architecture in Germany. His works reflect his dry humor and his sometimes childlike perspective, his personal moods and beliefs, and his musicality.

Friedrich Wilhelm Nietzsche ( 15 October 1844 – 25 August 1900) was a German philosopher, cultural critic, composer, poet, and philologist whose work has exerted a profound influence on modern intellectual history. He began his career as a classical philologist before turning to philosophy. He became the youngest person ever to hold the Chair of Classical Philology at the University of Basel in 1869 at the age of 24. Nietzsche resigned in 1879 due to health problems that plagued him most of his life; he completed much of his core writing in the following decade. In 1889, at age 44, he suffered a collapse and afterward a complete loss of his mental faculties. He lived his remaining years in the care of his mother until her death in 1897 and then with his sister Elisabeth Förster-Nietzsche. Nietzsche died in 1900.

Immanuel Kant (, ; 22 April 1724 – 12 February 1804) was a German philosopher and one of the central Enlightenment thinkers. Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and aesthetics have made him one of the most influential figures in modern Western philosophy.

Jorge Agustín Nicolás Ruiz de Santayana y Borrás, known in English as George Santayana (December 16, 1863 – September 26, 1952), was a philosopher, essayist, poet, and novelist. Originally from Spain, Santayana was raised and educated in the US from the age of eight and identified himself as an American, although he always retained a valid Spanish passport. At the age of 48, Santayana left his position at Harvard and returned to Europe permanently.

Arthur Schopenhauer ( 22 February 1788 – 21 September 1860) was a German philosopher. He is best known for his 1818 work The World as Will and Representation (expanded in 1844), which characterizes the phenomenal world as the product of a blind and insatiable metaphysical will. Building on the transcendental idealism of Immanuel Kant, Schopenhauer developed an atheistic metaphysical and ethical system that rejected the contemporaneous ideas of German idealism. He was among the first thinkers in Western philosophy to share and affirm significant tenets of Indian philosophy, such as asceticism, denial of the self, and the notion of the world-as-appearance. His work has been described as an exemplary manifestation of philosophical pessimism.

Robin George Collingwood FBA (1889–1943) was an English philosopher, historian and archaeologist. He is best known for his philosophical works, including The Principles of Art (1938) and the posthumously published The Idea of History (1946).

John Dewey (October 20, 1859 – June 1, 1952) was an American philosopher, psychologist, and educational reformer whose ideas have been influential in education and social reform. He was one of the most prominent American scholars in the first half of the twentieth century.

David Hume (born David Home; 7 May 1711 NS – 25 August 1776) was a Scottish Enlightenment philosopher, historian, economist, librarian, and essayist, who is best known today for his highly influential system of philosophical empiricism, scepticism, and naturalism. Beginning with A Treatise of Human Nature (1739–40), Hume strove to create a naturalistic science of man that examined the psychological basis of human nature. Hume argued against the existence of innate ideas, positing that all human knowledge derives solely from experience. This places him with Francis Bacon, Thomas Hobbes, John Locke, and George Berkeley as an empiricist.

Martin Heidegger (26 September 1889 – 26 May 1976) was a German philosopher who is widely regarded as one of the most important philosophers of the 20th century. He is best known for contributions to phenomenology, hermeneutics, and existentialism.

Georg Wilhelm Friedrich Hegel (27 August 1770 – 14 November 1831) was a German philosopher and the most important figure in German idealism. He is considered one of the fundamental figures of modern Western philosophy, with his influence extending to the entire range of contemporary philosophical issues, from aesthetics to ontology to politics, both in the analytic and continental tradition.