We observe closely related species in sympatry and infer how they evolved from a common ancestor.
Peter R. GrantI think a few hundred years from now we'll start having the 'posthuman' era of different species.
Martin ReesEach person is an idiom unto himself, an apparent violation of the syntax of the species.
Gordon W. AllportMaybe you are a poet and a dreamer, but don't you realize that those two species are extinct now?
J.G. BallardWe are a dreadful species indeed, and deserve whatever it is our techno-baubles do to us.
Douglas CouplandEvolution requires intermediate forms between species and palaeontology does not provide them.
David KittsThe sexes in each species of being... are always true equivalents - equals but not identical.
Antoinette Brown Blackwell