Thank God when he oppresses you, and again when he releases you.

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

How many years must a man do nothing, before he can at all know what is to be done and how to do it!

What is the path? There is no path. On into the unknown.

Plants and flowers of the commonest kind can form a pleasing diary, because nothing which calls back to us the remembrance of a happy moment can be insignificant.

We gladly put antiquity above our age but not posterity. Only a father doesn't begrudge his son's talent.

Be generous with kindly words, especially about those who are absent.