Note 89 — Chapter II
Hugh J. C. Beavan translation
It may be seen, in analysing these two simple facts, that they lead us to admit the existence of a notion of duty among animals, although, perhaps, an obscure one:—they know that they ought to act as they are doing from fear of a whipping, and this is an operation of the mind which no one, we think, will deny to be complex in its nature, and purely intellectual.