We live in an "age of immorality," argues historian and author Rutger Bregman. "The moral rot runs deep across elite institutions of every stripe," Bregman says in his first BBC Reith Lecture. His series of lectures describes why he is calling for a moral revolution to counter the culture of cynicism and un-seriousness among global elites. Bregman says history has proven how small determined groups have catalysed profound moral change, and that legacy should be an inspirational guide for all of us today. IDEAS is featuring lectures from the BBC Reith Lectures, this is the first episode.