Have no fear of perfection - you'll never reach it.
There are several good protections against temptations, but the surest is cowardice.
The greatest thing in the world is to know how to belong to oneself.
Don't ever take a fence down until you know the reason it was put up.
The secret of greatness is simple: do better work than any other man in your field - and keep on doing it.
You can go a long way with bad legs and a good head.
I shouted, and earned a hard thump on my head for my trouble.