Never worry about anything that is past. Charge it up to experience and forget the trouble. There are always plenty of troubles ahead, so don't turn and look back on any behind you.
Herbert HooverIt is a great profession. There is the fascination of watching a figment of the imagination emerge through the aid of science to a plan on paper. Then it moves to realization in stone or metal or energy. Then it brings jobs and homes to men. Then it elevates the standards of living and adds to the comforts of life. That is the engineer's high privilege.
Herbert Hoover