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, that there is some difficulty in rightly determining the objects which we distinctly conceive.

At last I will devote myself sincerely and without reservation to the general demolition of my opinions.

Doubt is the origin of wisdom

De omnibus dubitandum

You just keep pushing. You just keep pushing. I made every mistake that could be made. But I just kept pushing.

The reading of all good books is like a conversation with the finest minds of past centuries.

In the matter of a difficult question it is more likely that the truth should have been discovered by the few than by the many.