Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
Without hard work, nothing grows but weeds.
Never complain and never explain.
If you've got a talent, protect it.
Be kind whenever possible. It is always possible.
Well done is better than well said.
To know oneself, one should assert oneself.
Know or listen to those who know.
By failing to prepare, you are preparing to fail.