For the mass of mankind, it will perhaps be always necessary to continue the appeal to incentives of this nature, and we know that such is the teaching promulgated by the different religions, which are in fact the metaphysics of the people. Be it, however, observed in this connection that a man is sometimes just as much in error as to the true motives that govern his own acts, as he is with regard to those of others. Hence it is certain that many persons, while they can only account to themselves for their noblest actions by attributing them to motives of the kind above described, are, nevertheless, really guided in their conduct by far higher and purer incentives, though the latter may be much more difficult to discover. They are doing, no doubt, out of direct love of their neighbour, that which they can but explain as the command of their God.