I can, therefore I am.

Expect problems and eat them for breakfast.

To know oneself, one should assert oneself.

The dog that trots about finds a bone.

Be thine own palace, or the world's thy jail.

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

It's always too early to quit.

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

By failing to prepare, you are preparing to fail.