If you don’t make mistakes, you
A boy is naturally full of humor.
If you don’t make mistakes, you’re not working on hard enough problems.
Two obsessions are the hallmarks of Nature's artistic style.
In physics, you don’t have to go around making trouble for yourself...
A friend is someone who knows all about you and still loves you.
Cultivate solitude and quiet and a few sincere...
Praise a stranger with a few nice words and he becomes a stranger that...