"Close your eyes, prick your ears, and from the softest sound to the wildest noise, from the simplest tone to the highest harmony, from the most violent, passionate scream to the gentlest words of sweet reason, it is Nature who speaks, revealing her being, her power, her life, and her relatedness so that a blind person, to whom the infinitely visible world is denied, can grasp an infinite vitality in what can be heard." J. Wolfgang von Goethe, cited by Andrea Wulf (2016), The Invention of Nature: the adventures of Alexander von Humboldt, the lost hero of science. Image by Monica Pinheiro, license CC BY-NC-SA (CC)
