Note 55 — IX A CRITICAL EXAMINATION OF THE POSITION OF MR. DARWIN’S WORK, “ON THE ORIGIN OF SPECIES,” IN RELATION TO THE COMPLETE THEORY OF THE CAUSES OF THE PHENOMENA OF ORGANIC NATURE.
Reading edition
And as I conceive with very good reason; but if any objector urges that we cannot prove that they have been produced by artificial or natural selection, the objection must be admitted—ultra-sceptical as it is. But in science, scepticism is a duty.