It's always too early to quit.

To know oneself, one should assert oneself.

What you do today can improve all your tomorrows.

Who seeks shall find.

Problems are not stop signs, they are guidelines.

Be gentle to all and stern with yourself.

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

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

Be kind whenever possible. It is always possible.