2520. That it is mutual love wherein all happiness lies, and that heaven consists in mutual love and in everyone regarding themselves as nothing, besides other properties of love, is evident from everything in nature, from the atmospheric divisions, from the parts and internal organs in the human body, where not one exists that does not have something beneficial from the whole, because it contributes to the whole. So there is a confluence of the happiness of all into those who are not devoted to self but to the whole, and who have faith, while the opposite comes to those who are devoted to themselves and wish others, even the much more worthy, to exist for their sake. 1748, 4 July.