Never crowd youngsters about their private affairs - sex especially. When they are growing up, they are nerve ends all over, and resent (quite properly) any invasion of their privacy. Oh, sure, they'll make mistakes - but that's their business, not yours. (You made your own mistakes, did you not?)
Robert A. HeinleinIf an elderly respected expert in a given field tells you that something can be done he is almost certainly right. If an elderly respected expert in a given field tells you that something is impossible, he is almost certainly wrong.
Robert A. HeinleinHate always sells well, but for repeat trade and the long pull happiness is sounder merchandise.
Robert A. HeinleinIt seems to me that the secret of true happiness in life is to know what you are and then be content to be that, in style, head up and proud, and not yearn to be something else.
Robert A. HeinleinWhen it donโt rain, the roof donโt leak; when it rains, I canโt fix it nohow.
Robert A. HeinleinThe second best thing about space travel is that the distances involved make war very difficult, usually impractical, and almost always unnecessary. This is probably a loss for most people, since war is our race's most popular diversion, one which gives purpose and color to dull and stupid lives. But it is a great boon to the intelligent man who fights only when he must-never for sport.
Robert A. Heinlein