"Do you really hear nothing? Do you not hear the terrible voice screaming around us on every side, the voice known commonly as silence? Since I came to this silent valley I have heard it all the time, it won’t let me sleep, oh yes, Reverend, if only I could sleep again." 

-- Georg Büchner - Lenz

Edward Munch - Der Schrei der Natur (The Scream of Nature)