" One should see the world, and see himself, as a scale with an equal balance of good and evil. When he does one good deed, the scale is tipped to the good — he and the world are saved. When he does one evil deed, the scale is tipped to the bad — he and the world are destroyed.’” “Interesting. Who said that, your grandmother?” “Maimonides. The great Jewish scholastic.” “I didn’t know you read Jewish philosophers.” “It is said, ‘You must accept the truth from whatever source it comes.’” “And who said that?” “Also Maimonides. "

― Gregory Maguire , Egg & Spoon