The history of science is full of revolutionary advances that required small insights that anyone might have had, but that, in fact, only one person … - Isaac Asimov

Nothing has to be true, but everything has to sound true.

It merely required the use of that much-neglected commodity — common sense. You see, there is a branch of human knowledge known as symbolic logic, which can be used to prune away all sorts of clogging deadwood that clutters up human language.

Were I to use the wits the good Spirits gave me," he said, "then I would say this lady cannot exist — for what sane man would hold a dream to be reality. Yet rather would I not be sane and lend belief to charmed, enchanted eyes.