You never know what motivates you.

I can, therefore I am.

Be gentle to all and stern with yourself.

The dog that trots about finds a bone.

The wise does at once what the fool does at last.

The most effective way to do it, is to do it.

If you think you can do it, you can.

To be a good loser is to learn how to win.

Know or listen to those who know.