Ontogeny Quotes

Hope is the enduring belief in the attainability of fervent wishes, in spite of the dark urges and rages which mark the beginning of existence. Hope is the ontogenetic basis of faith, and is nourished by the adult faith which pervades patterns of care.

Ontogeny re-capitulates phylogeny.

Phylogeny and ontogeny are, therefore, the two coordinated branches of morphology. Phylogeny is the developmental history [Entwickelungsgeschichte] of the abstract, genealogical individual; ontogeny, on the other hand, is the developmental history of the concrete, morphological individual.

I established the opposite view, that this history of the embryo (ontogeny) must be completed by a second, equally valuable, and closely connected branch of thought - the history of race (phylogeny). Both of these branches of evolutionary science, are, in my opinion, in the closest causal connection; this arises from the reciprocal action of the laws of heredity and adaptation... 'ontogenesis is a brief and rapid recapitulation of phylogenesis, determined by the physiological functions of heredity (generation) and adaptation (maintenance).

I have devoted my whole life to the study of Nature, and yet a single sentence may express all that I have done. I have shown that there is a correspondence between the succession of Fishes in geological times and the different stages of their growth in the egg,-this is all. It chanced to be a result that was found to apply to other groups and has led to other conclusions of a like nature.

Embryology reveals surprising similarities between early embryos of seemingly quite different animals. And it also shows that some structures that may look very different later on have fundamental similarities in the way they form.

In the course of individual development, inherited characters appear, in general, earlier than adaptive ones, and the earlier a certain character appears in ontogeny, the further back must lie in time when it was acquired by its ancestors.

It is now firmly established that ontogeny does not repeat phylogeny

Child psychology and animal psychology are of relatively slight importance, as compared with the sciences which deal with the corresponding physiological problems of ontogeny and phylogeny.

Human culture, in evolutionary terms, moves from episodic, to mimetic, to mythic, to theoretic - that made all kinds of sense. To some extent, ontogeny repeats phylogeny, because children go through something like the same thing.

If ontogeny recapitulates phylogeny, then children are somewhat closer to our roots as primates in the arboreal forest. Humans appear to be the only primates that I know of that are afraid of heights. All other primates, when they're scared, they run up a tree, where they feel safe.

The psychic development of the individual is a short repetition of the course of development of the race.