Dejection subjects a man to causeless fears; which is a madness, commonly called “melancholy”; apparent also in divers manners; as in haunting of solitudes and graves; in superstitious behaviour; and in fearing, some one, some another particular thing. In sum, all passions that produce strange and unusual behaviour, are called by the general name of madness. But of the several kinds of madness, he that would take the pains, might enrol a legion. And if the excesses be madness, there is no doubt but the passions themselves, when they tend to evil, are degrees of the same.