And though this may seem too subtle a deduction of the laws of Nature, to be taken notice of by all men; whereof the most part are too busy in getting food, and the rest too negligent to understand; yet to leave all men inexcusable, they have been contracted into one easy sum, intelligible even to the meanest capacity; and that is, “Do not that to another, which thou wouldst not have done to thyself”; which showeth him that he has no more to do in learning the laws of Nature, but when weighing the actions of other men with his own, they seem too heavy, he put them into the other part of the balance, and his own into their place, that his own passions and self-love may add nothing to the weight; and then there is none of these laws of Nature that will not appear unto him very reasonable.