[3] What appear to me to be certain resemblances between the Galenical and the modern vitalistic views of Henri Bergson may perhaps be alluded to here. Galen's vital principle, [Greek: hê technikê physis] ("creative growth"), presents analogies with _l'Evolution créatrice_: both manifest their activity in producing qualitative change ([Greek: alloiôsis], _changement_): in both, the creative change cannot be analysed into a series of static states, but is one and continuous. In Galen, however, it comes to an end with the _development of the individual_, whereas in Bergson it continues indefinitely as the _evolution of life_. The three aspects of organic life may be tabulated thus:-- [Greek: dynamis] [Greek: energeia] [Greek: ergon] Work to be done. Work being done. Work done, finished. Future aspect. Present aspect. Past aspect. Function. Structure. The _élan vital_. A "thing." A changing which cannot be understood as a sum of static parts; a constant becoming, never stopping--at least till the [Greek: ergon] is reached. Bergson's Bergson's Bergson's "outlook "teleological" "philosophical" of physical aspect. aspect. science." Galen recognized "creativeness" ([Greek: technê]) in the _development_ of the individual and its parts (ontogeny) and in the maintenance of these, but he failed to appreciate the creative _evolution_ of species (phylogeny), which is, of course, part of the same process. To the teleologist the possibilities ([Greek: dynameis]) of the Physis are limited, to Bergson they are unlimited. Galen and Bergson agree in attaching most practical importance to the middle category--that of Function.