Yield to temptation. It may not pass your way again. Robert Heinlein
Never underestimate the power of human stupidity. Robert Heinlein
Women and cats will do as they please. Men and dogs had better get used to it. Robert Heinlein
Always listen to experts. They’ll tell you what can’t be done and why. Then do it. Robert Heinlein
Progress isn’t made by early risers. It’s made by lazy men trying to find easier ways to do something. Robert Heinlein
Beauty is not diminished by being shared. Robert Heinlein
A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity. Robert Heinlein
Goodness without wisdom always accomplishes evil. Robert Heinlein
One man’s ‘magic’ is another man’s engineering. ‘Supernatural’ is a null word. Robert Heinlein
A touchstone to determine the actual worth of an ‘intellectual’, find out how he feels about astrology. Robert Heinlein
Sex without love is merely healthy exercise. Robert Heinlein
Theology is never any help; it is searching in a dark cellar at midnight for a black cat that isn’t there. Theologians can persuade themselves of anything. Robert A. Heinlein