I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery.

I concluded that I might take as a general rule the principle that all things which we very clearly and obviously conceive are true: only observing, however, t…

If I found any new truths in the sciences, I can say that they follow from, or depend on, five or six principal problems which I succeeded in solving and which…

I am indeed amazed when I consider how weak my mind is and how prone to error.

The passion for seeking the truth for truth's sake...can be kept alive only if we continue to seek the truth for truth's sake.

Abstract cleverness of the mind only separates the thinker from the world of reality, and that world, the Forest of Real Life, is in a desperate condition now …

The Nicomachean Ethics is only intended as a guide for politicians, and they are only concerned to know what is good, not what goodness means...and in any case…