Never complain and never explain.
Expect problems and eat them for breakfast.
Be thine own palace, or the world's thy jail.
What you do today can improve all your tomorrows.
The wise does at once what the fool does at last.
Things do not happen. Things are made to happen.
Well done is better than well said.
Be gentle to all and stern with yourself.
If you've got a talent, protect it.
Quality is not an act, it is a habit.
The initial motivation of the experiment which led to this discovery was a subconscious feeling for the inexhaustible wealth of nature, a wealth that goes far beyond the imagination of man.