The debate over ape personhood is of great social and moral importance. For more than twenty-five years, attorney Steven Wise has been arguing that animals who have cognitive complexities similar to humans should be legally granted basic rights of au- tonomy. In my view, granting personhood status and other rights to great apes are at- tainable goals. But how should we go about it? My worry is that Thompson’s suggest- ed strategy relies on Kantian ethics, in particular on Kant’s notion of autonomy. In fact, I am worried about Kantian ethics in general because of its influence on morality and ultimately on our legal system.