He came of what he himself called an "obscure family," his ancestors in the near generations having been hard-working, intelligent English clerks and artisans. They were nonconformists, and independent enough to take their chances in the new world for the sake of liberty of conscience. But the lesson that he learned from his parents was rather more practical than theological and was, perhaps unconsciously, attested to in the epitaph which he wrote for them. At two points in it he recorded his belief that God helps them who help themselves, laying special stress on the degree to which they help themselves: By constant labor and industry, With God's blessing, he says, and again: Be encouraged to diligence in thy calling And distrust not Providence. Cotton Mather, whom Franklin quoted with respect, would have reversed the ideas in order and importance; but it was Cotton Mather's "Essays to Do Good" that Franklin quoted, and his ability to draw a practical inference from some slight event ("Be not too proud," he said, when he bumped his head against a beam), and not any of his sermons. Franklin's early reading was almost wholly in the field of what might be called common-sense literature--discussions of different aspects of daily life and how to get on in it. He read "Pilgrim's Progress," which of all religious books is one of the most definite on questions of earthly conduct. He read a great deal of history and biography: Defoe "Upon Projects," Locke "Concerning Human Understanding" and "The Art of Thinking," and Addison on all the common-sense subjects that make up the contents of the _Spectator_. He read the rimed "Essays" of Alexander Pope, too, using a quotation from one of them to confirm his belief in a system of arguing by means of asking questions, which is known as the "Socratic method."