“THE history of philosophy is much more a part of philosophy itself than the history of science is part of science, for it is not impossible to become a competent scientist without knowing much about the history of science, but no man can carry very far his own philosophical reflections unless he first studies the history of philosophy. In point of fact, the First Book of Aristotle’s Metaphysics is also the first known History of Greek Philosophy, and it remains a perfect example of how such a history should be written. For indeed it is a philosophical history of philosophy, whereas too many modern histories of philosophy are written in an unphilosophical way.”
~Etienne Gilson: The Unity of Philosophical Experience.