April 30

Born in 1723, Mathurin Jacques Brisson was a pioneer in the field of zoology, particularly known for his work in ornithology and entomology. He published 'Ornithologia' in 1760, offering detailed descriptions and classifications of bird species. Brisson’s systematic approach to taxonomy influenced later naturalists, including Carl Linnaeus. Beyond his zoological research, he engaged with philosophical questions about species and natural history. Elected to the French Academy of Sciences, he remained an active scholar until his death in 1806.

Born in 1878 in Płock, Witwicki studied philosophy and psychology at Jagiellonian University. He pioneered experimental psychology research, exploring human perception and thought processes. A noted translator, he introduced Greek philosophical texts to Polish audiences. As a historian, he researched the history of art and culture in Eastern Europe. Witwicki was also an accomplished painter and illustrator, exhibiting his works in Kraków. His interdisciplinary approach bridged the humanities and sciences, influencing generations of scholars. He continued teaching and writing until his death in 1948.

Félix Guattari was a French psychotherapist and philosopher whose work bridged psychoanalysis, politics, and ecology. He collaborated with Gilles Deleuze to co-author seminal texts such as Anti-Oedipus and A Thousand Plateaus, which challenged traditional notions of identity and desire. Guattari developed the concept of schizoanalysis as an alternative to Freudian psychoanalysis. He was active in political movements and environmental campaigns throughout his life. His ideas influenced fields ranging from social theory to art criticism. Guattari’s interdisciplinary approach left a lasting impact on contemporary thought.