A vain man can never be altogether rude. Desirous as he is of pleasing, he fashions his manners after those of others.

Habit is a man's sole comfort. We dislike doing without even unpleasant things to which we have become accustomed.

A mathematician is only perfect insofar as he is a perfect man, sensitive to the beauty of truth.

Time is a strange thing. It is a whimsical tyrant, which in every century has a different face for all that one says and does.

Objects in pictures should so be arranged as by their very position to tell their own story.

With little wit and ease to suit them, They whirl in narrow circling trails, Like kittens playing with their tails.

Toleration ought in reality to be merely a transitory mood. It must lead to recognition. To tolerate is to affront.