Three great forces rule the world: stupidity, fear and greed.

Give back to the world at least what you've received.

The most difficult part about understanding something is that we understand it all.

During the youthful period of mankind's spiritual evolution human fantasy created gods in man's own image, who, by the operations of their will were supposed to determine, or at any rate to influence, the phenomenal world. Man sought to alter the disposition of these gods in his own favour by means of magic and prayer.

If the bee disappeared off the surface of the globe, then man would have only four years of life left. No more bees, no more pollination, no more plants, no more animals, no more man.

Whatever there is of God and goodness in the universe, it must work itself out and express itself through us. We cannot stand aside and let God do it.

The most beautiful thing we can experience is the mysterious. It is the source of all true art and science.