117. The fourth chapter on Human Nature, and the corresponding third chapter of the Leviathan, entitled On Discourse, or the Consequence and Train of Imagination, are among the most remarkable in Hobbes, as they contain the elements of that theory of association, which was slightly touched afterwards by Locke, but developed and pushed to a far greater extent by Hartley. “The cause,” he says, “of the coherence or consequence of one conception to another is their first coherence or consequence at that time when they are produced by sense: As, for instance, from St. Andrew the mind runneth to St. Peter, because their names are read together; from St. Peter to a stone, from the same cause; from stone to foundation, because we see them together; and for the same cause from foundation to church, and from church to people, and from people to tumult; and, according to this example, the mind may run almost from anything to anything.”[270] This he illustrates in the Leviathan by the well-known question suddenly put by one, in conversation about the death of Charles I., “What was the value of a Roman penny?” Of this _discourse_, as he calls it, in a larger sense of the word than is usual with the logicians, he mentions several kinds; and after observing that the remembrance of succession of one thing to another, that is, of what was antecedent and what consequent and what concomitant, is called an experiment, adds that “to have had many experiments, is what we call experience, which is nothing else but remembrance of what antecedents have been followed by what consequents.”[271] [270] Hum. Nat. c. 4, § 2. [271] Id. |Experience.|