It's always too early to quit.

To know oneself, one should assert oneself.

Things do not happen. Things are made to happen.

What you do today can improve all your tomorrows.

If you're going through hell, keep going.

Be gentle to all and stern with yourself.

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

The dog that trots about finds a bone.

Be kind whenever possible. It is always possible.