It is a human tendency "to measure truth and error by our capacity."

Of the opinions of philosophy I most gladly embrace those that are most solid, that is to say, most human and most our own; my opinions, in conformity with my conduct, are low and humble.

I do not understand; I pause; I examine.

The most regular and most perfect soul in the world has but too much to do to keep itself upright from being overthrown by its own weakness.

I see men ordinarily more eager to discover a reason for things than to find out whether the things are so.

We are more unhappy to see people ahead of us than happy to see people behind us.

The most universal quality is diversity.