“Sex, whatever else it is, is an athletic skill. The more you practice, the more you can, the more you want to, the more you enjoy it, the less it tires you.”
― Robert A. Heinlein, The Cat Who Walks Through Walls

“Secrecy is the keystone to all tyranny. Not force, but secrecy and censorship. When any government or church for that matter, undertakes to say to its subjects, "This you may not read, this you must not know," the end result is tyranny and oppression, no matter how holy the motives. Mighty little force is needed to control a man who has been hoodwinked in this fashion; contrariwise, no amount of force can control a free man, whose mind is free. No, not the rack nor the atomic bomb, not anything. You can't conquer a free man; the most you can do is kill him.”
― Robert A Heinlein

“Sex should be friendly. Otherwise stick to mechanical toys; it's more sanitary.”
― Robert A. Heinlein

“Whenever women have insisted on absolute equality with men, they have invariably wound up with the dirty end of the stick. What they are and what they can do makes them superior to men, and their proper tactic is to demand special privileges, all the traffic will bear. They should never settle merely for equality. For women, "equality" is a disaster.”
― Robert A. Heinlein

“You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic.”
― Robert A. Heinlein, Revolt in 2100/Methuselah's Children

“Stupidity cannot be cured. Stupidity is the only universal capital crime; the sentence is death. There is no appeal, and execution is carried out automatically and without pity.”
― Robert Heinlein

In the twentieth century, nowhere on Earth was sex so vigorously suppressed as in America---and nowhere else was there such a deep interest in it.”
― Robert A. Heinlein, Stranger in a Strange Land

Violence is the last refuge of the incompetent.
Isaac Asimov

Correct, the competent don't wait that long.
Unknown