It's always too early to quit.

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

If you think you can do it, you can.

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

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

Leap, and the net will appear.

Do not weep do not wax indignant. Understand.

Never complain and never explain.

To know oneself, one should assert oneself.