The hardest part of gaining any new idea is sweeping out the false idea occupying that niche.
Robert A. HeinleinThe 3-legged stool of understanding is held up by history, languages, and mathematics. Equipped with those three you can learn anything you want to learn. But if you lack any one of them you are just another ignorant peasant with dung on your boots.
Robert A. HeinleinThe shamans are forever yacking about their snake oil miracles. I prefer the real McCoy, a pregnant woman.
Robert A. Heinlein