limitation, and include the duties taught by love as well as those prescribed by law.

For it is obvious that this is the only precept which I can wish should regulate the conduct of all men (speaking, of course, from the point of view of the possibly passive part I may play, where my Egoism is touched). This rule, Quod tibi fieri, etc., is, however, in its turn, merely a circumlocution for, or, if it be preferred, a premise of, the proposition which I have laid down as the simplest and purest definition of the conduct required by the common consent of all ethical systems; namely, Neminem laede, immo omnes, quantum potes, juva (do harm to no one; but rather help all people, as far as lies in your power). The true and real substance of Morals is this, and never can be anything else.