In the end, we will remember not the words of our enemies, but the silence of our friends.
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.