"My father never permitted anything which I learnt to degenerate into a mere exercise of memory. He strove to make the understanding not only go along with every step of the teaching but...precede it."

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There are a lot of little things about our bodies that we all know, but we never talk about. That's what interests me. These are practically universal experiences; nobody mentions them! Some of them are disgusting. Some of them are appallingly revolting and degrading even to the most degenerate mind. So let's get started with a couple of them.

— George Carlin