What is the good of drawing conclusions from experience? I don't deny we sometimes draw the right conclusions, but don't we just as often draw the wrong ones?

A man has virtues enough if he deserves pardon for his faults on account of them.

The human tendency to regard little things as important has produced very many great things.

Some people come by the name of genius in the same way that certain insects come by the name of centipede -- not because they have a hundred feet, but because most people can't count above 14.

Nothing puts a greater obstacle in the way of the progress of knowledge than thinking that one knows what one does not yet know.

To do the opposite of something is also a form of imitation, namely an imitation of its opposite.

Great men too make mistakes, and many among them do it so often that one is almost tempted to call them little men.