Leap, and the net will appear.
Know or listen to those who know.
Do not weep do not wax indignant. Understand.
I can, therefore I am.
To be a good loser is to learn how to win.
The dog that trots about finds a bone.
Either you run the day or the day runs you.
It's always too early to quit.
Only the educated are free.
Always desire to learn something useful.
Beauty is the first test: there is no permanent place in the world for ugly mathematics.