Robert A. Heinlein

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

- Robert A. Heinlein

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

- Robert A. Heinlein

"Little girls, like butterflies, need no excuse."

- Robert A. Heinlein

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

- Robert A. Heinlein

"May you live as long as you wish and love as long as you live."

- Robert A. Heinlein

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

- Robert A. Heinlein

"A generation which ignores history has no past -- and no future."

- Robert A. Heinlein

"Liberty is never unalienable; it must be redeemed regularly with the blood of patriots or it always vanishes. Of all the so-called natural human rights that have ever been invented, liberty is least likely to be cheap and is never free of cost."

- Robert A. Heinlein

"Everything is theoretically impossible, until it is done."

- Robert A. Heinlein

"Butterflies are self propelled flowers."

- Robert A. Heinlein

"I never learned from a man who agreed with me."

- Robert A. Heinlein

"You can have peace. Or you can have freedom. Don't ever count on having both at once."

- Robert A. Heinlein

"Being a mother is an attitude, not a biological relation."

- Robert A. Heinlein

"Do not confuse "duty" with what other people expect of you; they are utterly different. Duty is a debt you owe to yourself to fulfill obligations you have assumed voluntarily. Paying that debt can entail anything from years of patient work to instant willingness to die. Difficult it may be, but the reward is self-respect."

- Robert A. Heinlein

"When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere."

- Robert A. Heinlein

"Never try to outstubborn a cat."

- Robert A. Heinlein

"They didn’t want it good, they wanted it Wednesday."

- Robert A. Heinlein

"Always listen to experts. They'll tell you what can't be done, and why. Then do it."

- Robert A. Heinlein

"Women and cats will do as they please, and men and dogs should relax and get used to the idea."

- Robert A. Heinlein

"Butterflies are self-propelled flowers."

- Robert A. Heinlein

"One man’s “magic” is another man’s engineering. “Supernatural” is a null word."

- Robert A. Heinlein

"You can have peace. Or you can have freedom. Don’t ever count on having both at once."

- Robert A. Heinlein

"How we behave toward cats here below determines our status in heaven."

- Robert A. Heinlein

"“Liberty is never unalienable; it must be redeemed regularly with the blood of patriots or it always vanishes. Of all the so-called natural human rights that have ever been invented, liberty is least likely to be cheap and is never free of cost.”"

- Robert A. Heinlein