The Unity Of Nature Author:Carl Friedrich Von Weizsacker The falling of an apple from a tree is an event ostensibly unrelated to the moon's traversing the zodiac. Yet, as Newton first pointed out, the two phenomena are linked: the apple's path to the ground and the moon's orbit of the earth are both determined by gravitational force. Newton's law of universal gravitation (a result of his reflections o... more »n the behaviors of apples and satellites), together with the other general laws of physics, suggests there is a unity in nature that, even to an enlightened observer, is not immediately apparent.« less