Think of a man in a chronic state of anger!

In engineering, that only is great which achieves. It matters not what the intention is, he who in the day of battle is not victorious is not saved by his intention.

Selfishness is that detestable vice which no one will forgive in others, and no one is without himself.

Oftentimes great and open temptations are the most harmless because they come with banners flying and bands playing and all the munitions of war in full view, so that we know we are in the midst of enemies that mean us damage, and we get ready to meet and resist them. Our peculiar dangers are those that surprise us and work treachery in our fort.

Interest works night and day in fair weather and in foul. It gnaws at a man's substance with invisible teeth.

It is not work that kills men; it is worry. Work is healthy; you can hard put more upon a man than he can bear. Worry is rust upon the blade. It is not the revolution that destroys the machinery, but the friction.

It is a man dying with his harness on that angels love to escort upward.