Nothing in Biology Makes Sense Except in the Light of Evolution

[2] The term "light of evolution"—or sub specie evolutionis—had been used earlier by the Jesuit priest and paleontologist Pierre Teilhard de Chardin and then by the biologist Julian Huxley.

[3] Dobzhansky opens with a critique of Shaikh Abdul Aziz bin Baz, who later became Grand Mufti of Saudi Arabia, for holding a belief based on scripture that the Sun revolves around the Earth.

[1] He illustrates the unity of living things using the molecular sequence of cytochrome C, which Emanuel Margoliash and Walter M. Fitch had shown to be similar in a wide range of species, including monkeys, tuna, kangaroos, and yeast.

This argued that Dobzhansky's arguments all "hinge[d] upon sectarian claims about God’s nature, actions, purposes, or duties"—claims that in Dilley's view required more justification and appeared mutually incompatible.

In the last paragraph of the article, Dobzhansky quotes from de Chardin's 1955 The Phenomenon of Man: The phrase "nothing in biology makes sense except in the light of evolution" has come into common use by those opposing creationism or its variant called intelligent design.