Earlier this week the Gates Foundation brought me in to speak to a group of Chinese social media influencers. My challenge to them was what I have challenged myself to in my book: do not succumb to cheap nationalism at a time of great tension. Words matter now like they have not in several decades with respect to the US-China relationship. It takes no imagination to see a world where US-China tension escalates to real conflict. This is not a time for rhetoric or demagoguery by either country.