" <...> [Rainer Maria Rilke] speaks of absorbing Earth's phenomena with the full frenzy of human relish and insight as our destiny: "It is our task to imprint this temporary, perishable earth into ourselves so deeply, so painfully and passionately, that its essence can rise again... We are the bees of the invisible... [Our work is] the continual conversion of the beloved visible and tangible world into the invisible vibrations and agitation of our own nature. "

― Diane Ackerman , An Alchemy of Mind: The Marvel and Mystery of the Brain