Bad books engender bad habits, but bad habits engender good books.

In order to improve the mind, we ought less to learn, than to contemplate.

For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than th eincreasing discovery of my own ignorance

He lives well who is well hidden.

If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.

Because reason...is the only thing that makes us men, and distinguishes us from the beasts, I would prefer to believe that it exists, in its entirety, in each of us.

The reading of all good books is indeed like a conversation with the noblest men of past centuries who were the authors of them, nay a carefully studied conversation, in which they reveal to us none but the best of their thoughts.