Life is like riding a bicycle. To keep your balance you must keep moving.

The most important human endeavor is the striving for morality in our actions. Our inner balance and even our very existence depend on it. Only morality in our actions can give beauty and dignity to life.

Science-fiction balances you on the cliff. Fantasy shoves you off.

The authorities liked to say that we received a balanced diet; it was indeed balanced — between the unpalatable and the inedible.

Man always travels along precipices. His truest obligation is to keep his balance.