Life is 10% what happens to you and 90% how you react to it.
Time is your friend; impulse is your enemy.
I'm not afraid to die, I'm afraid of not trying.
The real wealth of a nation grows from its soil.
The function of a system of hypotheses is to warn us beforehand what will be our experience—to enable us to make accurate predictions.
Once we realize that imperfect understanding is the human condition, there is no shame in being wrong, only in failing to correct our mistakes.