If you've got a talent, protect it.
Problems are not stop signs, they are guidelines.
The most effective way to do it, is to do it.
The secret of getting ahead is getting started.
To be a good loser is to learn how to win.
Without hard work, nothing grows but weeds.
Be thine own palace, or the world's thy jail.
You never know what motivates you.
Know or listen to those who know.
Be kind whenever possible. It is always possible.
As for everything else, so for a mathematical theory: beauty can be perceived but not explained.