Pessimist by policy, optimist by temperament- it is possible to be both. How? By never taking an unnecessary chance and by minimizing the risks you can't avoid. This permits you to play out the game untroubled by the certainty of the outcome.
Robert A. HeinleinThe most expensive thing in the world is a second-best military establishment, good but not good enough to win.
Robert A. HeinleinEvery Congressman, every Senator knows precisely what causes inflation... but can't, [won't] support the drastic reforms to stop it [repeal of the Federal Reserve Act] because it could cost him his job.
Robert A. Heinlein