Neoteny in Humans

...the concept of "neoteny"—the retention of juvenile features into adult life. It is a commonplace of human evolution that the transition from Australopithecus to Homo and from Homo habilis to Homo erectus and thence to Homo sapiens all involved prolonging and slowing the development of the body so that it still looked like a baby when it was already mature. The relatively large brain case and small jaw, the slender limbs, the hairless skin, the unrotated big toe, the thin bones, even the ...

 1973 Humanist Manifesto II - The Individual

The Individual FIFTH: The preciousness and dignity of the individual person is a central humanist value. Individuals should be encouraged to realize their own creative talents and desires. We reject all religious, ideological, or moral codes that denigrate the individual, suppress freedom, dull intellect, dehumanize personality. We believe in maximum individual autonomy consonant with social responsibility. Although science can account for the causes of behavior, the possibilities of indiv...