Full Idea
To the grub under the bark the exquisite fitness of the woodpecker's organism to extract him would certainly argue a diabolical designer.
Gist of Idea
The wonderful design of a woodpecker looks diabolical to its victims
Source
William James (Pragmatism - eight lectures [1907], Lec 3)
Book Reference
James,William: 'Pragmatism - eight lectures' [Dover 1995], p.43
A Reaction
What an elegant sentence! The huge problem for religious people who accept (probably reluctantly) evolution by natural selection is the moral nature of the divine being who could use such a ruthless method of design.