The most effective way to do it, is to do it.
To be a good loser is to learn how to win.
The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
I can, therefore I am.
Only the educated are free.
Be thine own palace, or the world's thy jail.
You never know what motivates you.
Well done is better than well said.
If you think you can do it, you can.
Crabbed and obscure definitions are of no use beyond a narrow circle of students, of whom probably every one has a pet one of his own.