真正的美国发现还在我们面前。我们精神、我们人民、我们强大而不朽的土地的真正实现，还有待到来。
The true discovery of America is before us. The true fulfillment of our spirit, of our people, of our mighty and immortal land, is yet to come.
种一棵树最好的时间是20年前，第二好的时间是现在。
The present is the point at which the future crumbles into the past.
Einstein was wrong when he said, 'God does not play dice'. Consideration of black holes suggests, not only that God does play dice, but that he sometimes confuses us by throwing them where they can't be seen
唯一的限制是你为自己设定的限制。
世界是生者的地方，死者在其中没有位置。死者什么都不是。他们甚至不是记忆。他们被遗忘了。而生者，也将被遗忘。