Love is that condition in which the happiness of another per... - Robert A. Heinlein, Stranger in a Strange Land

"If you've got the truth you can demonstrate it. Talking doesn't prove it."

"Come Judgment Day, we may find that Mumbo Jumbo the God of the Congo was the Big Boss all along."

"Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy - in fact, they are almost incompatible; one emotion hardly leaves room for the other."

"But goodness alone is never enough. A hard, cold wisdom is required for goodness to accomplish good. Goodness without wisdom always accomplishes evil."

"Love is that condition in which the happiness of another person is essential to your own."