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 Witts, 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 lesse 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 onely from the difference of mens complexions; but also from their difference of customes, and education.

The Passions that most of all cause the differences of Wit, are principally, the more or lesse 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 severall sorts of Power.