attribute it to the change of outward circumstances, but to that of the inner condition, the physical state. For when an actual, though only temporary, increase of our serenity, even to the extent of joyfulness, takes place, it usually appears without any external occasion. It is true that we often see our pain arise only from some definite external relation, and are visibly oppressed and saddened by this only. Then we believe that if only this were taken away, the greatest contentment would necessarily ensue. But this is illusion. The measure of our pain and our happiness is on the whole, according to our hypothesis, subjectively determined for each point of time, and the motive for sadness is related to that, just as a blister which draws to a head all the bad humours otherwise distributed is related to the body. The pain which is at that period of time essential to our nature, and therefore cannot be shaken off, would, without the definite external cause of our suffering, be divided at a hundred points, and appear in the form of a hundred little annoyances and cares about things which we now entirely overlook, because our capacity for pain is already filled by that chief evil which has concentrated in a point all the suffering otherwise dispersed. This corresponds also to the observation that if a great and pressing care is lifted from our breast by its fortunate issue, another immediately takes its place, the whole material of which was already there before, yet could not come into consciousness as care because there was no capacity left for it, and therefore this material of care remained indistinct and unobserved in a cloudy form on the farthest horizon of consciousness. But now that there is room, this prepared material at once comes forward and occupies the throne of the reigning care of the day (πρυτανευουσα). And if it is very much lighter in its matter than the material of the care which has vanished, it knows how to blow itself out so as apparently to equal it in size, and thus, as the chief care of the day, completely fills the throne.