Be kind whenever possible. It is always possible.
It's always too early to quit.
Without hard work, nothing grows but weeds.
To be a good loser is to learn how to win.
Know or listen to those who know.
The secret of getting ahead is getting started.
To know oneself, one should assert oneself.
Well done is better than well said.
You never know what motivates you.
The wise does at once what the fool does at last.
Well-timed silence is the most commanding expression.