It's always too early to quit.

If you're going through hell, keep going.

The dog that trots about finds a bone.

To know oneself, one should assert oneself.

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

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

The secret of getting ahead is getting started.

Leap, and the net will appear.

What you do today can improve all your tomorrows.