The capacity for hope is the most significant fact of life. It provides human beings with a sense of destination and the energy to get started.
What was most significant about the lunar voyage was not that men set foot on the moon but that they set eye on the earth.
Man is not imprisoned by habit. Great changes in him can be wrought by crisis - once that crisis can be recognized and understood.
The main failure of education is that it has not prepared people to comprehend matters concerning human destiny.