Insanity in individuals is something rare - but in groups, parties, nations and epochs, it is the rule.
Don't ever take a fence down until you know the reason it was put up.
Rest is the sweet sauce of labor.
The only difference between a rut and a grave... is in their dimensions.
Whatever you do, do it to the purpose; do it thoroughly, not superficially. Go to the bottom of things. Any thing half done, or half known, is in my mind, neither done nor known at all. Nay, worse, for it often misleads.
Men are equal; it is not birth but virtue that makes the difference.
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.