For every nature it is sufficient that it goes on its way, and prospers. The rational nature prospers while it assents to no false or uncertain opinion, while it directs its impulses to unselfish ends alone, while it aims its desires and aversions only at the things within its power, and while it welcomes with contentment all that universal Nature ordains. The nature of each of us is part of universal Nature, as the leaf is part of the tree; the leaf, indeed, is part of an insensible and unreasoning system which can be obstructed in its workings; but human nature is part of that universal system which cannot be impeded, and which is intelligent and just. Hence is meted out, suitably to all, our proper portions of time, of matter, of active principle, of powers, and of events. Yet look not to find that each several thing corresponds exactly with any other. Consider rather the whole nature and circumstances of the one, and compare them with the whole of the other.