He was never for a moment in doubt regarding the inevitable effect of such an evolutionary theory as Darwin's on the general social attitude of humanity. Men would be led, he realized, to see themselves as the accidental products of an animal nature based on the struggle for existence and the preservation of the species. Enough has been said to stamp Ruskin as a reader in the book of nature, capable of deciphering the signature of the spirit in the phenomena of the sense-world.