Alexander Suarez
Puritan Board Freshman
Mr. [John] Flavel being in London in 1673, his old bookseller, Mr. Boulter, gave him this following relation, viz. That some time before, there came into his shop a sparkish gentleman to enquire for some play-books ; Mr. Boulter told him he had none, but shewed him Mr. Flavel's little treatise of Keeping the Heart, intreated him to read it, and assured him it would do him more good than play-books. The gentleman read the title, and glancing upon several pages here and there, broke out into these and such other expressions, "What a damnable Fanatic was he who made this book?" Mr. Boulter begged of him to buy and read it, and told him he had no cause to censure it so bitterly ; at last he bought it, but told him he would not read it. "What will you do with it then," said Mr. Boulter? "I will tear and burn it," said he, "and send it to the Devil." Mr. Boulter told him, that he should not have it. Upon this the gentleman promised to read it ; and Mr. Boulter told him, if he disliked it upon reading, he would return him his money. About a month after, the gentleman came to the shop again in a very modest habit, and with a serious countenance, bespoke Mr. Boulter thus; "Sir, I most heartily thank you for putting this book into my hands; I bless God that moved you to do it, it hath saved my soul; blessed be God that ever I came into your shop." And then he bought a hundred more of those books of him, and told him he would give them to the poor who could not buy them, and so left him, praising and admiring the goodness of God.
Source: https://archive.org/details/wholeworksofjohn01flav/page/13/mode/1up?view=theater