If the principle of interest rightly understood had nothing but the present world in view, it would be very insufficient; for there are many sacrifices which can only find their recompense in another; and whatever ingenuity may be put forth to demonstrate the utility of virtue, it will never be an easy task to make that man live aright who has no thoughts of dying. It is therefore necessary to ascertain whether the principle of interest rightly understood is easily compatible with religious belief. The philosophers who inculcate this system of morals tell men, that to be happy in this life they must watch their own passions and steadily control their excess; that lasting happiness can only be secured by renouncing a thousand transient gratifications; and that a man must perpetually triumph over himself, in order to secure his own advantage. The founders of almost all religions have held the same language. The track they point out to man is the same, only that the goal is more remote; instead of placing in this world the reward of the sacrifices they impose, they transport it to another. Nevertheless I cannot believe that all those who practise virtue from religious motives are only actuated by the hope of a recompense. I have known zealous Christians who constantly forgot themselves, to work with greater ardor for the happiness of their fellow-men; and I have heard them declare that all they did was only to earn the blessings of a future state. I cannot but think that they deceive themselves; I respect them too much to believe them.