He will always be a slave who does not know how to live upon a little.
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.
Mediocrity knows nothing higher than itself, but talent instantly recognizes genius.
All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
We bear the world and we make it... There was never a great man who had not a great mother - it is hardly an exaggeration.
Courage is the art of being the only one who knows you're scared to death.
The problem is never how to get new, innovative thoughts into your mind, but how to get old ones out. Every mind is a building filled with archaic furniture. Clean out a corner of your mind and creativity will instantly fill it.