"You think of me as a... living stone - hard and cold. That's true. We are set the way we are, and it is very rare for us to experience a real change. When that happens, as when Bella entered my life, it is a permanent change. There's no going back."

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Detection is, or ought to be, an exact science and should be treated in the same cold and unemotional manner. You have attempted to tinge it with romanticism, which produces much the same effect as if you worked a love-story ... Some facts should be suppressed, or, at least, a just sense of proportion should be observed in treating them. The only point in the case which deserved mention was the curious analytical reasoning from effects to causes, by which I succeeded in unravelling it.'' —Sherlock Holmes on John Watson's "pamphlet", "A Study in Scarlet".

— Arthur Conan Doyle