Contra Todd Ryan’s interpretation, I argue that it is possible to reconstruct a metaphysical argument that does not restrict likeness in general to ideas. While I agree with Ryan that Berkeley’s writings provide us with the resources to reconstruct such an argument, I disagree with Ryan that this argument entails a restriction of likeness to ideas. Unlike Ryan, I argue that Berkeley is not committed to the claim that we can compare only ideas, but to the view that the only thing that can be compared to an idea is another idea.

In this paper, I present and analyze Berkeley’s sporadic claims on the animal‒human divide, concentrating on his early works, especially his Notebooks. Before drawing our attention to the importance of imagination, I start by contextualizing Berkeley’s views on animal cognition more generally. More specifically, I aim to clarify that though he verbally agrees with Descartes that animals cannot imagine like we do, Berkeley’s view is motivated by fundamentally different considerations. What he ultimately denies is that animals can imagine in a sense that requires the sort of spontaneous and creative activity we share more with God than animals.