"I would not advise anyone to read my books who has not the leisure and inclination to meditate seriously with me."

"The perception of the understanding is sometimes obscure and confused, while that of the will is always clear and distinct."

"It is true that when I consider how many different beliefs there are among men, I find no reason to choose one rather than another."

"To be a good philosopher, one must be a good mathematician."

"I have been nourished by books, and I have found in them a great deal of good as well as a great deal of evil."