 He said the former was the philosophy and the latter was the science, and claimed that in history science has always preceded Philosophy.One of his seminal works was "Reading Capital" (1965), co-written with Étienne Balibar, Roger Establet, Jacques Rancière and Pierre Macherey.He opposed Hegel's teleological approach to history, drew on Bachelard's concept of "epistemological break" and defined philosophy as "class struggle in theory."