John Locke (1812). “Essay on human understanding concluded. Defence of Mr. Locke's opinion concerning personal identity. Of the conduct of the understanding. Some thoughts concerning reading and study for a gentleman. Elements of natural philosophy. A new method of a common-place-book”, p.195
John Locke (1854). “Locke's essays. An essay concerning human understanding. And A treatise on the conduct of the understanding. With the author's last additions”, p.489