In the year 1640 I instructed John Humphreys, master of that art, in the study of astrology: upon this occasion, being at London, by accident in Fleet-Street, I met Dr. Percival Willoughby of Derby; we were of old acquaintance, and he but by great chance lately come to town, we went to the Mitre-Tavern in Fleet-Street, where I sent for old Will Poole the astrologer, living then in Ram-Alley: being come to us, the Doctor produced a bill, set forth by a master of arts in Cambridge, intimating his abilities for resolving of all manner of questions astrologically. The bill was shewed, and I wondering at it Poole made answer, he knew the man, and that he was a silly fool; 'I,' quoth he, 'can do more than he; he sees me every day, he will be here by and by;' and indeed he came into our room presently: Poole had, just as we came to him, set a figure, and then shewed it me, desiring my judgement; which I refused, but desired the master of arts to judge first; he denied, so I gave mine, to the very great liking of Humphreys, who presently enquired, if I would teach him, and for what? I told him I was willing to teach, but would have one hundred pounds. I heard Poole, whilst I was judging the figure, whisper in-Humphrey's ear, and swear I was the best in England. Staying three or four days in town, at last we contracted for forty pounds, for I could never be quiet from his solicitations; he invited me to supper, and before I had shewed him any thing, paid me thirty-five pounds. As we were at supper a client came to speak with him, and so up into his closet he went with his client; I called him in before he set his figure, or resolved the question, and instantly acquainted him how he should discover the moles or marks of his client: he set his figure, and presently discovers four moles the querent had; and was so overjoyed therewith, that he came tumbling down the stairs, crying, 'Four by G----, four by G----, I will not take one hundred pounds for this one rule.' In six weeks time, and tarrying with him three days in a week, he became a most judicious person.