In a morbid condition of the brain, dreams often have a singular actuality, vividness, and extraordinary semblance of reality. At times monstrous images are created, but the setting and the whole picture are so truth-like and filled with details so delicate, so unexpectedly, but so artistically consistent, that the dreamer, were he an artist like Pushkin or Turgenev even, could never have invented them in the waking state. Such sick dreams always remain long in the memory and make a powerful impression on the overwrought and deranged nervous system.
Fyodor DostoevskyA man would still do something out of sheer perversity - he would create destruction and chaos - just to gain his point...and if all this could in turn be analyzed and prevented by predicting that it would occur, then man would deliberately go mad to prove his point.
Fyodor Dostoevsky