Realm

A person that started in to carry a cat home by the tail was getting knowledge that was always going to be useful to him, and warn't ever going to grow dim or doubtful
Mark Twain, Tom Sawyer Abroad
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The philosopher is Nature’s pilot. And there you have our difference: to be in hell is to drift, to be in heaven is to steer
George Bernard Shaw, Man and Superman

Once, Zhuang Zhou dreamt he was a butterfly, a butterfly flitting and fluttering around, happy with himself and doing as he pleased. He didn't know he was Zhuang Zhou. Suddenly he woke up and there he was, solid and unmistakable Zhuang Zhou. But he didn't know if he was Zhaung Zhou who had dreamt he was a butterfly, or a butterlfy dreaming he was Zhuang Zhou.