Alan takes us through a comparative study of texts from the time of the Buddha up until the 19th Century, comparing the way shamatha has been dealt with amongst a variety of Buddhist traditions. Meditation starts at 38:04 He reveals the particular relevance of settling the mind in its natural state to dealing with the suffering of change and answers questions (75:53) regarding the karmically neutral nature of the substrate and the problems that arise from concepts of beginninglessness and infinite time.