I am sure it has been done with less, but you should be prepared to write and throw away a million words of finished material. By finished, I mean completed, done, ready to submit, and written as well as you know how at the time you wrote it. You may be ashamed of it later, but that's another story.
Jerry PournelleWe have for years been building a society in which everybody plunders everybody, and while we are weary of being plundered, we enjoy the plunder.
Jerry PournelleIf you submit a search of the following phrase on Google, you get over four hundred returns, and they are often very strange ones: "I have more information in one place than anybody in the world."
Jerry Pournelle