During this talk, Peter described Paticca Samupadda, usually translated as the principle of Dependent Origination.  This is one of the core concepts of Buddhism, as it explains how the dynamics of self formation and dissolution operate.  Emphasis was placed on understanding that being able to directly experience feeling as feeling (the second of the four foundations of mindfulness) interrupts the formation and operation of craving and clinging, and that these functions are core to the problem of suffering.  Feeling brings resolution to this problem, and is why so much emphasis is placed on body awareness, particularly on strongly pleasant or unpleasant feelings in a non-reactive way.