Ravenna

“Can you remember your first taste of spice?” “It tasted like cinnamon.” “But never twice the same,” he said. “It’s like life—it presents a different face each time you take it. Some hold that the spice produces a learned-flavor reaction. The body, learning a thing is good for it, interprets the flavor as pleasurable—slightly euphoric. And, like life, never to be truly synthesized.”
― Frank Herbert, Dune