Albert Einstein at his best:
Insanity: doing the same thing over and over again and expecting different results.
A person who never made a mistake never tried anything new.
Learn from yesterday, live for today, hope for tomorrow. The important thing is not to stop questioning.
The true sign of intelligence is not knowledge but imagination.
Imagination is more important than knowledge.
and the end
Any man who can drive safely while kissing a pretty girl is simply not giving the kiss the attention it deserves.