As the replenishment of this group depends upon the conditions prevailing at the earlier ages, it is to the mortality in childhood that most weight, from the standpoint of hygiene, must be attached.
In both France and Germany, for instance, the process of replenishment after a great war can be traced both early and late in the 19th century.
At the same time, in his later view, Plato avoids the exaggeration of denying all positive quality of pleasure even to the coarser sensual gratifications; they are undoubtedly cases of that " replenishment " or " restoration " to its " natural state " of a bodily organ, in which he defines pleasure to consist (see Timaeus, pp. 64, 65); he merely maintains that the common estimate of them is to a large extent illusory, or a false appearance of pleasure is produced by contrast with the antecedent or concomitant painful condition of the organ.
He no doubt criticizes Plato's account of the nature of pleasure, arguing that we cannot properly conceive pleasure either as a " process " or as " replenishment " - the last term, he truly says, denotes a material rather than a psychical fact.