Character: Auguste Dupin

- And Mr. Dupin refused the cognac of Henry Cato. Which of us is more stupid?

... the jurisprudence of any country shows that the law, as soon as he becomes a science and a system, it ceases to be justice. It is easy to verify the errors to which a blind devotion to the principle of classification has led the common law, observing how often the legislature had to intervene to restore justice, which it managed to lose.

When the seal just to be a common opinion (no matter how justified it may be), it does not ensure yourself of success with the crowd.

I have noticed that in search of truth, logic finds its way on the deviations from the usual and commonplace and, in cases like this, should not ask, "what happened?" "what happened is unusual, that hasn't happened before?".

I, of course, there is no need to tell you, said Dupin, after reading my notes, that this is a much more complicated case than the murders in the Rue Morgue from which it differs in one very important respect, as it represents though is brutal, but ordinary crime. There is nothing out of the ordinary. Note that for this reason, all thought that to reveal it would be easy, whereas it was his mediocrity and is the main stumbling block.