It's always too early to quit.

If you're going through hell, keep going.

Without hard work, nothing grows but weeds.

Know or listen to those who know.

The secret of getting ahead is getting started.

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

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

To know oneself, one should assert oneself.

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