"Three tendencies can be observed in the estimation of dreams. Many philosophers have given currency to one of these tendencies, one which at the sam… - Sigmund Freud

"Three tendencies can be observed in the estimation of dreams. Many philosophers have given currency to one of these tendencies, one which at the same time preserves something of the dream's former over-valuation. The foundation of dream life is for them a peculiar state of psychical activity, which they even celebrate as elevation to some higher state. Schubert, for instance, claims: "The dream is the liberation of the spirit from the pressure of external nature, a detachment of the soul from the fetters of matter." Not all go so far as this, but many maintain that dreams have their origin in real spiritual excitations, and are the outward manifestations of spiritual powers whose free movements have been hampered during the day ("Dream Phantasies," Scherner, Volkelt). A large number of observers acknowledge that dream life is capable of extraordinary achievements — at any rate, in certain fields ("Memory")."