What does it mean to devote yourself wholly to helping others? In her book Strangers Drowning, Larissa MacFarquhar seeks out people living lives of extreme ethical commitment and tells their deeply intimate stories; their stubborn integrity and their compromises; their bravery and their recklessness; their joys and defeats and wrenching dilemmas.

In this provocative conversation writer Samanth Subramanian along with Larissa contemplates what it means to be human. In a world of strangers drowning in need, how much should we help, and how much can we help? Is it right to care for strangers even at the expense of those we are closest to? What exactly do we value most as human beings, and why?

This conversation was originally streamed as part of the The Bangalore Life Science Cluster and NCBS Archives' Public Lecture series and has been adapted to this podcast.