No man is such a conquerer as the man who has defeated himself.

‎Hold yourself responsible for a higher standard than anybody else expects of you. Never excuse yourself. Never pity yourself. Be a hard master to yourself-and be lenient to everybody else.

The overweening self-respect of conceited men relieves others from the duty of respecting them at all

Now comes the mystery. (His last words)

It's not the work which kills people, it's the worry. It's not the revolution that destroys machinery it's the friction.

The real man is one who always finds excuses for others, but never excuses himself.