When you realize the value of all life, you dwell less on what is past and concentrate more on the preservation of the future.
That man is prudent who neither hopes nor fears anything from the uncertain events of the future.
Happiness or misfortune are prescribed by law of Heaven, but their source comes from ourselves.
The danger of the past was that men became slaves. The danger of the future is that man may become robots.
I would rather die standing than live kneeling