In his previous book, The Attention Revolution , bestselling author Alan Wallace guided readers through the stages of shamatha, a meditation for focusing the mind. In Stilling the Mind , he uses the wisdom of Dzogchen--the highest of all the meditation traditions--to open up the shamatha practice into a space of vast freedom. Here, Wallace introduces us to Dudjom Lingpa's Vajra Essence , one of the most cherished works of the Nyingma school from which...