Original sentence: In The Water Babies, Kingsley tells of a group of humans called the Doasyoulikes who are allowed to do "whatever they like" and gradually lose the power of speech and degenerate into gorillas and are shot by the African explorer Paul de Chaillu
Edited sentence: (He is entirely correct about this, no modern scholar of the subject would suggest that new species are better than old ones, merely that they were able to out-compete them under prevailing conditions.) In The Water Babies, Kingsley tells of a group of humans called the Doasyoulikes who are allowed to do "whatever they like" and gradually lose the power of speech and degenerate into gorillas and are shot by the African explorer Paul de Chaillu