As for _acquired wit_, I mean acquired by method and instruction, there is none but reason; which is grounded on the right use of speech, and produceth the sciences. But of reason and science I have already spoken, in the fifth and sixth chapters. The causes of this difference of wits, are in the passions; and the difference of passions proceedeth, partly from the different constitution of the body, and partly from different education. For if the difference proceeded from the temper of the brain, and the organs of sense, either exterior or interior, there would be no less difference of men in their sight, hearing, or other senses, than in their fancies and discretions. It proceeds therefore from the passions; which are different, not only from the difference of mens’ complexions; but also from their difference of customs, and education. The passions that most of all cause the difference of wit, are principally, the more or less desire of power, of riches, of knowledge, and of honour. All which may be reduced to the first, that is, desire of power. For riches, knowledge, and honour, are but several sorts of power. And therefore, a man who has no great passion for any of these things; but is, as men term it, indifferent; though he may be so far a good man, as to be free from giving offence; yet he cannot possibly have either a great fancy, or much judgment. For the thoughts are to the desires, as scouts, and spies, to range abroad, and find the way to the things desired: all steadiness of the mind’s motion, and all quickness of the same, proceeding from thence: for as to have no desire, is to be dead: [Sidenote: Giddiness.] so to have weak passions, is dullness; and to have passions indifferently for everything, GIDDINESS, and _distraction_; [Sidenote: Madness.] and to have stronger and more vehement passions for anything, than is ordinarily seen in others, is that which men call MADNESS. Whereof there be almost as many kinds, as of the passions themselves. Sometimes the extraordinary and extravagant passion, proceedeth from the evil constitution of the organs of the body, or harm done them; and sometimes the hurt, and indisposition of the organs, is caused by the vehemence, or long continuance of the passion. But in both cases the madness is of one and the same nature. The passion, whose violence, or continuance, maketh madness, is either great _vain-glory_; which is commonly called _pride_, and _self-conceit_; or great _dejection_ of mind. [Sidenote: Rage.]