In this work Baruch Spinoza, one of the cardinal thinkers of all time, answers the eternal questions of man and his passions, God and nature. In the deepest sense, this dictionary of Spinoza s philosophy is a veritable treasury of sublime wisdom. Dagobert D. Runes was a philosopher and author. He was the founding publisher of The Philosophical Library, where he worked to bring philosophical texts to a general audience. Runes was a colleague and friend of Albert Einstein and many other influential philosophers and scientists. Runes is responsible for publishing an English translation of Marx's On the Jewish Question, which he published under the title A World without Jews, and for editing The Dictionary of Philosophy, published in 1942.