I can, therefore I am.
Only the educated are free.
To know oneself, one should assert oneself.
If you've got a talent, protect it.
To be a good loser is to learn how to win.
It's always too early to quit.
Wherever you are - be all there.
Leap, and the net will appear.
Know or listen to those who know.
The wise does at once what the fool does at last.
Beauty is the first test: there is no permanent place in the world for ugly mathematics.