What Deep Mind is
The Collected Works of Shinran Shorter Works Gutoku's Notes 2: "Deep mind is the deeply entrusting mind. There are two aspects. The first is to believe deeply and decidedly that you are in actuality a foolish being of karmic evil caught in birth-and-death, ever sinking and ever wandering in transmigration from innumerable kalpas in the past, with never a condition that would lead to emancipation. The second is to believe deeply and decidedly that Amida Buddha's Forty-eight Vows grasp sentient beings, and that allowing yourself to be carried by the power of the Vow without any doubt or apprehension, you will attain birth."