"The artist may be well advised to keep his work to himself till it is completed, because no one can readily help him or advise him with it... but the scientist is wiser not to withhold a single finding or a single conjecture from publicity."

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Never open your story with a character thinking, I advise my students. As a further precaution, don’t put a character in a room alone – create a friend, a bystander, a genie, for God’s sake, any sentient creature with whom your main character can converse, perhaps argue or, better yet, engage in some action. If a person is out and doing, it’s more likely that something interesting might happen to her or him. Shut up in a room with only his thoughts for company well, that way lies fictional disaster.

— Les Standiford