Abstract

I defend the thesis that it is conceptually possible for non-linguistic creatures to possess second-order beliefs--that is, beliefs about their own beliefs and those of others. I defend this thesis against Donald Davidson and Jonathan Bennett who argue that the thesis is false on the grounds that non-linguistic creatures cannot manifest second-order beliefs. In reply, I present a case that I argue shows a non-linguistic creature manifesting second-order beliefs. Also, I examine and criticize two arguments of Davidson's that are designed to show that non-linguistic creatures cannot possess any kind of belief, let alone second-order beliefs. Finally, I examine some important experiments on non-linguistic primates, and show that they provide no positive evidence that actual non-linguistic animals have second-order beliefs