I took Mike Mahoney’s lecture course and graduate seminar on the Scientific Revolution in my first semester at Princeton and these courses have remained models for me in how to approach these topics and teaching more generally. Mike embodied the Princeton program’s motto of “living beyond” the distinction between internalist and externalist. He included the latest works without neglecting older ones, and encouraged students to build their own syntheses with nuance, open-mindedness and sound judgment. I will always feel grateful for his generous teaching. With belated thanks to Mike and heartfelt condolences to his family, friends and colleagues.