Susan Cain is an American writer and lecturer, recognized as a #1 New York Times bestselling author. Her 2012 non-fiction book, 'Quiet: The Power of Introverts in a World That Can't Stop Talking,' argues that modern Western culture often misunderstands and undervalues the traits and capabilities of introverted individuals. She followed this with 'Quiet Power: The Secret Strengths of Introverts' (2016), which focuses on introverted children and teens, and their educators and parents.