Tami Simon speaks with Jack Kornfield, the author of The Wise Heart and one of the key teachers to introduce Buddhist mindfulness practice to the West. Kornfield reflects on four decades of personal meditation practice and how this has informed how he works with students. He also explores how Buddhist insights can help us during challenging times, whether or not it is possible or not to be liberated even in spite of our neurosis, and what he means by "the crystal of liberation." (48 minutes)