Hatred is a heavy burden. It sinks the heart deep in the breast, and lies like a tombstone on all joys.

Mathematicians are like Frenchmen: whatever you say to them they translate into their own language and forthwith it is something entirely different.

The important thing is not to know more than all men, but to know more at each moment than any particular man.

Enjoy what you can, endure what you must.

Enjoy when you can, and endure when you must.

Errors belong to libraries; truth, to the human mind.

Thou must (in commanding and winning, or serving and losing, suffering or triumphing) be either anvil or hammer.