Hate always sells well, but for repeat trade and the long pull happiness is sounder merchandise.

The two highest achievements of the human mind are the twin concepts of "loyalty" and "duty". Whenever these twin concepts fall into disrepute, get out of there fast! You may possibly save yourself, but it is too late to save that society. It is doomed.

Anyone who clings to the historically untrue-and thoroughly immoral-doctrine that, 'violence never settles anything' I would advise to conjure the ghosts of Napoleon Bonaparte and the Duke of Wellington and let them debate it. The ghost of Hitler could referee, and the jury might well be the Dodo, the Great Auk and the Passenger Pigeon. Violence, naked force, has settled more issues in history than has any other factor, and the contrary opinion is wishful thinking at its worst. Breeds that forget this basic truth have always paid for it with their lives and freedom.

Heinlein's Rules for Writers Rule One: You Must Write Rule Two: Finish What Your Start Rule Three: You Must Refrain From Rewriting, Except to Editorial Order Rule Four: You Must Put Your Story on the Market Rule Five: You Must Keep it on the Market until it has Sold

When the need arises - and it does - you must be able to shoot your own dog. Don't farm it out — that doesn't make it nicer, it makes it worse.

Every general prohibition creates its bootleggers.

A "critic" is a man who creates nothing.