There's so much pollution in the air now that if it weren't for our lungs there'd be no place to put it all.
The world tolerates conceit from those who are successful, but not from anybody else.
Because we don't think about future generations, they will never forget us.
Somebody has to do something, and it's just incredibly pathetic that it has to be us.
I have often wished I had time to cultivate modesty... But I am too busy thinking about myself.
Insanity in individuals is something rare - but in groups, parties, nations and epochs, it is the rule.
Nothing in the world can take the place of Persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan 'Press On' has solved and always will solve the problems of the human race.