If I ever become a philosophy professor, there’s a good chance that at some point I will have to teach a class on ethics, because classes on ethics are in much higher demand than classes on most other areas of philosophy. And if I do that, I think I might seriously consider seeing if I can get away with teaching an entire class on Peter Singer.
Why? Because Singer consistently writes about stuff that matters. He has a tendency to write urging readers to make radical changes in their lives, whether it’s becoming a vegan or donating 10% or more of their income to charity. And when he’s not urging people to do things that will significantly impact their day-to-day lives, he’s at least urging them to rethink how they think about some very important decisions they’ll have to make at some point in their lives.
Who else? Judith Jarvis Thompson, probably. Anyone else?