Félix Evaristo Mejía was a Dominican Republic writer, diplomat, and educator. He was a member of the Union Nationalist group representing an important role in the struggle for Dominican sovereignty against United States military intervention (1916–1924). In the Superior Institute of Teacher Education Salomé Ureña there is a site that bears his name.
Félix Fénéon was a French art critic, gallery director, writer and anarchist during the late 19th century and early 20th century. He coined the term Neo-Impressionism in 1886 to identify a group of artists led by Georges Seurat, and ardently promoted them.
Felix Gilbert was a German-born American historian of early modern and modern Europe.
Gilbert was born in Baden-Baden, Germany, to a middle-class Jewish family, and part of the Mendelssohn Bartholdy clan. In the latter half of the 1920s, Gilbert studied under Friedrich Meinecke at the University of Berlin. Gilbert's area of expertise was the Renaissance, especially the diplomatic history of the period He was a fellow of the Institute for Advanced Study in Princeton from 1962 to 1975, and maintained an active involvement as an emeritus faculty member until his death in 1991. He was elected to the American Academy of Arts and Sciences in 1963 and the American Philosophical Society in 1969.
Pierre-Félix Guattari was a French psychoanalyst, political philosopher, semiotician, social activist, and screenwriter. He co-founded schizoanalysis with Gilles Deleuze, and ecosophy with Arne Næss, and is best known for his literary and philosophical collaborations with Deleuze, most notably Anti-Oedipus (1972) and A Thousand Plateaus (1980), the two volumes of their theoretical work Capitalism and Schizophrenia.
Felix Hollaender was a German writer, critic, dramaturge and theatre director. At one point he worked as a stage producer with his friend Max Reinhardt.
Christian Felix Klein was a German mathematician and mathematics educator, known for his work with group theory, complex analysis, non-Euclidean geometry, and on the associations between geometry and group theory. His 1872 Erlangen program, classifying geometries by their basic symmetry groups, was an influential synthesis of much of the mathematics of the time.
