Well done is better than well said.
To be a good loser is to learn how to win.
You never know what motivates you.
Quality is not an act, it is a habit.
The dog that trots about finds a bone.
Be kind whenever possible. It is always possible.
Never complain and never explain.
It's always too early to quit.
To know oneself, one should assert oneself.
Things do not happen. Things are made to happen.
It frequently happens that two persons, reasoning right on a mechanical subject, think alike and invent the same thing without any communication with each other.