Speaking with the past and the present, seventy-three authors from various fields and branches of philosophy offer a structured interpretive catalog of one hundred basic philosophical concepts, taking us from Plato, Cicero, Thomas Aquinas, and Peter Abelard to Nietzsche, Godel, Derrida, and Rorty, reliably informing the reader with clarity and comprehensiveness, offering a summary of fundamental philosophical debates, the most important positions, and the strongest arguments of philosophy, and densely and comprehensibly explaining an extensive area of the universe of philosophical becoming.