Always desire to learn something useful.
Leap, and the net will appear.
Only the educated are free.
Go for it now. The future is promised to no one.
Without hard work, nothing grows but weeds.
Be thine own palace, or the world's thy jail.
After a storm comes a calm.
To be a good loser is to learn how to win.
It's always too early to quit.
Wherever you are - be all there.
As for everything else, so for a mathematical theory: beauty can be perceived but not explained.