For me, the Great Mystery, is that every moment is a brand new moment! None has ever existed just like it ever before! If you meditate deeply enough on the question, What is Life?, you can directly experience this. If you grow antennae to sense the Truth at greater and greater subtleties, you can get it. When you think about all the mind-blowing life forms that exist and that continue to bubble forth, you get the Great Mystery. I noticed this when I went to the Monterey Aquarium. It's just mindblowing to see all the shapes, sizes, colors, forms, ways of living of creatures just in Monterey Bay. Then think about all the myriad forms that live in a forest, or in the desert, or in the air, etc. And each and every individual is distinct and unique. But my main point is that life is always new!