Be kind whenever possible. It is always possible.

To know oneself, one should assert oneself.

What you do today can improve all your tomorrows.

Be gentle to all and stern with yourself.

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

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

It's always too early to quit.

The dog that trots about finds a bone.

Well done is better than well said.