What is the nature of mind like? Imagine a sky, empty, spacious, and pure from the beginning; its essence islike this. Imagine a sun, luminous, clear, unobstructed, and spontaneously present; its nature is like this. Imagine that sun shining out impartially on us and all things, penetrating all directions; its energy, which is the manifestation of compassion, is like this: Nothing can obstruct it, and it pervades everywhere.