There is no right faith in believing what is true, unless we believe it because it is true.

The power of duly appreciating little things belongs to a great mind.

One way in which fools succeed where wise men fail is that through ignorance of the danger they sometimes go coolly about a hazardous business.

Ethical maxims are bandied about as a sort of current coin of discourse, and, being never melted down for use, those that are of base metal are never detected.

In our judgment of human transactions, the law of optics is reversed, we see most dimly the objects which are close around us.

He that is not open to conviction is not qualified for discussion.

As an exercise of the reasoning faculties, pure mathematics is an admirable exercise, because it consists of reasoning alone and does not encumber the student with any exercise of judgment.