Felipe Martínez Marzoa (Vigo, 1943) is a professor at the University of Barcelona. His publications include: History of Philosophy (1973) recently revised philosophy of "Capital" of Marx (1983), Unknown common root (Study of Kant's theory of beauty) (The Raft of the Medusa, 1987 ), Rereading Kant (1989), From Greece and philosophy (1990), Calculation and be (an approach to Leibniz)