Jonathan Bastian talks with writer, lecturer, and author Susan Cain about the sweet joy of sadness. Cain, author of “Bittersweet: How Sorrow and Longing Make Us Whole,” reflects on the touch of sweetness that comes from sadness and despair and shares how a greater acceptance of these emotions can be beneficial and even therapeutic. Delve deeper into life, philosophy, and what makes us human by joining the Life Examined discussion group on Facebook.