If you rest, you rust.
The cure for boredom is curiosity. There is no cure for curiosity.
Since when was genius found respectable?
You grow up the day you have your first real laugh — at yourself.
Take hope from the heart of man, and you make him a beast of prey.
The difference between a rut and a grave is the depth.
A child becomes an adult when he realizes that he has a right not only to be right but also to be wrong.
When a stupid man is doing something he is ashamed of, he always declares that it is his duty.