You become uneasy with people in direct proportion to how many lies you have to keep track of in their presence.

And I repeat: if there is anything that can divert the land of my birth from its current stampede into the Stone Age, it is the widespread dissemination of the thoughts and perceptions that Robert Heinlein has been selling as entertainment since 1939.

Sexual intercourse vests no property rights.

It took me better than a quarter century to learn, the hard way, that hard work at something you want to be doing is the most fun that you can have out of bed . . . to learn that the smart man finds ways to make everything he does be work; to learn that "leisure" time is truly pleasurable (indeed tolerable) only to the extent that is its subconscious grazing for information with which to infuse newer, better work.

Librarians are like crack dealers when it comes to hooking small children.

The day Apollo 11 landed, I knew men would walk on Mars in my lifetime. I'm no longer nearly so sure. The last budget put forward in Canada contained not a penny for Mars.

We did make use, from time to time, of candles, neckties, scarves, shoelaces, a little water-color paintbrush, her hairbrush, butter, whipped cream, strawberry jam, Johnson’s Baby Oil, my Swedish hand vibrator, a fascinating bead necklace she had, miscellaneous common household items, and every molecule of flesh that was exposed to air or could be located with strenuous search.