As nature has taught us the use of our limbs, without giving us the knowledge of the muscles and nerves, by which they are actuated; so has she implanted in us an instinct, which carries forward the thought in a correspondent course to that which she has established among external objects; though we are ignorant of those powers and forces, on which this regular course and succession of objects totally depends.
Naturak gure organoak erabiltzen irakatsi digun bezala, hauek mugiarazten dituzten muskulu eta nerbioen ezagutzarik eman gabe, halaxe ezarri du guregan sen bat, gure pentsamena kanpo-objektuen artean jarrita daukanari dagokion abiotik daramana, nahiz eta objektuen abio eta segida erregular hau bere orotasunean gidatzen duten ahalmen eta indarren berririk ez jakin.