The emotional state that leads to achievements resembles that of a worshiper or the lover.
The true sign of intelligence is not knowledge but imagination.
I believe that whatever we do or live for has its causality; it is good, however, that we cannot see through to it.
To understand the world one must not be worrying about one's self.
If you have never failed, you have never tried anything new.
Great spirits have always encountered opposition from mediocre minds. The mediocre mind is incapable of understanding the man who refuses to bow blindly to conventional prejudices and chooses instead to express his opinions courageously and honestly.