It's always too early to quit.
Leap, and the net will appear.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
Who seeks shall find.
To be a good loser is to learn how to win.
Be kind whenever possible. It is always possible.
Always desire to learn something useful.
Be thine own palace, or the world's thy jail.
Well done is better than well said.
Any story about revenge is ultimately a story about forgiveness, redemption, or the futility of revenge.