Pierre-Paul Grasse, ahli ilmu hewan terkenal Perancis yang juga penguji Darwinisme, berkomentar di dalam Evolusi dan Seleksi Alam, satu bab pada bukunya Evlolusi Makhluk Hidup.
Pierre-Paul Grass, a well-known French zoologist and critic of Darwinism, has these words to say in Evolution and Natural Selection, a chapter of his book The Evolution of Living Organisms.