As it is in the body, so it is in the mind; practice makes it what it is, and most even of those excellencies, what are looked on as natural endowments, will be found, when examined into more narrowly, to be the product of exercise, and to be raised to that pitch, only by repeated actions.
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