With copious evidence ranging from Plato's haughtiness to Beethoven's tirades, we may conclude that the most brilliant people of history tend to be a prickly lot.
— Stephen Jay Gould
Inspiration was a temperamental guest. It dropped in unannounced, then left without so much as a goodbye, slipping out a window in the dead of night or sauntering out the front door, leaving the house empty, drafty, and cold.