Yield to temptation. It may not pass your way again.
Robert Heinlein (1907 - 1988)
Source: Time Enough for Love
Contributed by: Zaady
Never frighten a little man. He'll kill you.
Source: Lazarus Long
What a wonderful world it is that has girls in it!
Little girls, like butterflies, need no excuse.
To enjoy the flavor of life, take big bites.
Never worry about theory as long as the machinery does what it's supposed to do.
No matter where or what, there are makers, takers, and fakers.
Once upon a time there was a Martian named Valentine Michael Smith.
Source: opening line of Stranger in a Strange Land
Anyone who cannot cope with mathematics is not fully human. At best he is a tolerable subhuman who has learned to wear shoes, bathe, and not make messes in the house.
Source: Time Enough for Love.
You can go wrong by being too skeptical as readily as by being too trusting.