But if the presence of God, if his wonderful wisdom and power, are seen in layers of earth, in successive strata of rocks, and in the deposition of fossil remains, how much more may they reasonably be expected to be seen in the organized and living bodies that cover the earth’s surface, in animals, and especially in man. And then the heavens above us, the sun, moon, and stars, all give their testimony. So that we may well say, if we had only the book of outward nature to look in, it would be hard to be an unbeliever; and could almost add, in the slightly altered language of a popular poet,
How canst thou disbelieve, and hope to be forgiven!
— The Life of Faith (1852) Part 1, Chapter 4.