Abstract Quote by Ernst Haeckel

Ontogeny re-capitulates phylogeny.

— Ernst Haeckel

I established the opposite view, that this history of the embryo (ontogeny) must be completed by a second, equally valuable, and closely connected branch…

— Ernst Haeckel

It is now firmly established that ontogeny does not repeat phylogeny

— George Gaylord Simpson

A living organism must be studied from two distinct aspects. One of these is the causal-analytic aspect which is so fruitfully applicable to ontogeny.…

— Gavin de Beer

Human culture, in evolutionary terms, moves from episodic, to mimetic, to mythic, to theoretic - that made all kinds of sense. To some extent,…

— Robert Neelly Bellah

“Phylogenesis is the mechanical cause of ontogenesis.1 In other words, the development of the stem, or race, is, in accordance with the laws of…

— Ernst Haeckel

“Species that evolved from a common ancestor are bunched together under the heading ‘genus’ (plural genera).”

— Yuval Noah Harari

Owing to the imperfection of language the offspring is termed a new animal, but it is in truth a branch or elongation of the…

— Erasmus Darwin

Morphological information has provided the greatest single source of data in the formulation and development of the theory of evolution and that even now,…

— Everett C. Olson

“It has already been stated that various parts in the same individual, which are exactly alike during an early embryonic period, become widely different…

— Charles Darwin

The primitive history of the species is all the more fully retained in its germ-history in proportion as the series of embryonic forms traversed…

— Fritz Muller

The fundamental problem in the origin of species is not the origin of differences in appearance, since these arise at the level of the…

— David Lack