Please note: This is a companion version & not the original book. Sample Book Insights:#1 The most basic definition of consciousness is that given by the philosopher Thomas Nagel in his famous essay What Is It Like to Be a Bat. : the essence of consciousness is that it is experience itself.#2 Consciousness is what we are referring to when we talk about experience in its most basic form. It is like something to be you in this moment, and it is like something to be the chair you’re sitting on. But unlike these things, which can be experienced, consciousness cannot be experienced.