The night Brad Warner learns that his childhood friend Marky has died, Warner is about to speak to a group of Zen students in Hamburg, Germany. It's the last thing he feels like doing. What he wants to do instead is tell his friend everything he never said, to explain Zen "to those who don't understand what I do for a living or why I care about this crazy philosophy and this weird meditation practice I do everyday." So, as he continues his teaching...