" the answer came instantly in an explosion of light, color, love, and beauty that blew through me like a crashing wave. What was important about these bursts was that they didn’t simply silence my questions by overwhelming them. They answered them, but in a way that bypassed language. Thoughts entered me directly. But it wasn’t thought like we experience on earth. It wasn’t vague, immaterial, or abstract. These thoughts were solid and immediate—hotter than fire and wetter than water—and as I received them I was able to instantly and effortlessly understand concepts that would have taken me years to fully grasp in my earthly life. "

― Eben Alexander , Proof of Heaven: A Neurosurgeon's Journey into the Afterlife