There are three things extremely hard: steel, a diamond, and to know one's self.
There are three things ...
Quotes from the same author
One today is worth two tomorrows.
The doorstep to the temple of wisdom is a knowledge of our own ignorance.
Watch the little things; a small leak will sink a great ship.
Honesty is the best policy.
Dost thou love life? Then do not squander time, for that is the stuff life is made of.
