Keep true to the dreams of thy youth.
There is nothing more dreadful than imagination without taste.
The secret of greatness is simple: do better work than any other man in your field - and keep on doing it.
Sometimes when you innovate, you make mistakes. It is best to admit them quickly, and get on with improving your other innovations.
If men could only know each other, they would neither idolize nor hate.
We are what we repeatedly do.
The coldest winter I ever spent was a summer in San Francisco.