These Vertues are of two sorts; Naturall, and Acquired. By Naturall, I mean not, that which a man hath from his Birth: for that is nothing else but Sense; wherein men differ so little one from another, and from brute Beasts, as it is not to be reckoned amongst Vertues. But I mean, that Witte, which is gotten by Use onely, and Experience; without Method, Culture, or Instruction. This NATURALL WITTE, consisteth principally in two things; Celerity Of Imagining, (that is, swift succession of one thought to another;) and Steddy Direction to some approved end. On the Contrary a slow Imagination, maketh that Defect, or fault of the mind, which is commonly called DULNESSE, Stupidity, and sometimes by other names that signifie slownesse of motion, or difficulty to be moved.