In France while completing his residency, Fanon wrote and published his first book, "Black Skin, White Masks" (1952), an analysis of the negative psychological effects of colonial subjugation upon black people. Originally, the manuscript was the doctoral dissertation, submitted at Lyon, entitled "Essay on the Disalienation of the Black", which was a response to the racism that Fanon experienced while studying psychiatry and medicine at university in Lyon; the rejection of the dissertation prompted Fanon to publish it as a book. For his doctor of philosophy degree, he submitted another dissertation of narrower scope and different subject. Left-wing philosopher Francis Jeanson, leader of the pro-Algerian independence Jeanson network, read Fanon's manuscript and insisted upon the new title; he also wrote the epilogue. Jeanson was a senior book editor at Éditions du Seuil, in Paris.