Spirituality is based on mind. In Buddhism, mind is what distinguishes sentient beings from rocks or trees or bodies of water. That which possesses discriminating awareness, that which possesses a sense of duality–which grasps or rejects something external–that is mind. Fundamentally, it is that which can be associated with an “other” — with any “something” that is perceived as different from the perceiver. That is the definition of mind. The traditional Tibetan phrase defining mind means precisely that: “That which can think of the other, the projection, is mind.”
From “Mind: The Open Secret,” in The Sanity We Are Born With: A Buddhist Approach to Psychology, page 64.
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