"The dealers snatched at the state of intellectual exhaustion and scepticism of all values that followed the first world war to abolish values and substitute for them an arbitrary mumbo-jumbo of occultism and pseudo-Freudianism, which they tagged on to the works of studio clowns like Picasso and Modigliani and the like. Oh, it's a depressing subject - let's forget it."
Source: wiktionary