Personal : Religion/Spirituality : Philosopher/ Humanist

Martin Foss (1889–1968) was a German-born American philosopher, professor, and scholar.

Aldo Capitini (23 December 1899 – 19 October 1968) was an Italian philosopher, poet, political activist, anti-fascist, and educator. He was one of the first Italians to take up and develop Mahatma Gandhi's theories of nonviolence and was known as "the Italian Gandhi".

Michel de Certeau (French: [sɛʁto]; 17 May 1925 – 9 January 1986) was a French Jesuit priest and scholar whose work combined history, psychoanalysis, philosophy, and the social sciences as well as hermeneutics, semiotics, ethnology, and religion. He was known as a philosopher of everyday life and widely regarded as a historian who had interests ranging from travelogues of the sixteenth and seventeenth centuries to contemporary urban life.A multidisciplinarian, he wrote ground-breaking studies in fields as diverse as mysticism, the act of faith, cultural dynamics in contemporary society, and historiography as an intellectual practice. His impact continues unabated, with new volumes appearing regularly, and perhaps surprisingly his reputation is growing even more rapidly in English and German-speaking countries and the Mediterranean than in his native France. This strong and growing interest in academia is not matched in the public sphere; however, partly due to his being considered a "difficult" author because of his highly personal style which makes translation difficult, and partly due to the declining status of French in the world generally. Nevertheless, portions of his prolific output have been translated into a dozen languages.

Marcel Jouhandeau (July 26, 1888 Guéret – April 7, 1979) was a French writer.

Jean-François Revel (born Jean-François Ricard; 19 January 1924 – 30 April 2006) was a French philosopher, journalist, and author. A prominent public intellectual, Revel was a socialist in his youth but later became a prominent European proponent of classical liberalism and free market economics. He was a member of the Académie française after June 1998. He is best known for his book Without Marx or Jesus: The New American Revolution Has Begun, published in French in 1970.

Richard Theodore Tarnas is a cultural historian and astrologer known for his books The Passion of the Western Mind: Understanding the Ideas That Have Shaped Our World View and Cosmos and Psyche: Intimations of a New World View. Tarnas is professor of philosophy and psychology at the California Institute of Integral Studies, and is the founding director of its graduate program in Philosophy, Cosmology, and Consciousness.