Do not listen to the words of people, fix your attention on their deeds.
First, learn the rules of the game. Then play better than everyone else.
Great spirits have always encountered violent opposition from mediocre minds.
If A=Success then the formula looks like this: A=X+Y*Z. X is work. Y is play. Z is keeping your mouth shut.
If you cannot explain simple; you do not know it well enough.
If you want to live a happy life, tie it to a goal, not to people or things.
I like to think the moon is there even if I am not looking at it.
Imagination is more important than knowledge.
I never teach my students. I only provide the conditions in which they can learn.
Information is not knowledge.
It's not that I am smart; I just stay with problems longer.
Know where to find the information and how to use it - that's the secret of success.
Learn from yesterday, live for today, hope for tomorrow.
Never think of the future. It will come soon enough.
Only two things are infinite: the universe and human stupidity, and I am not sure about the former.