Marie Louise von Franz,
Alchemical Active Imagination,
Spring Publications,
1987, S.19

“ fairy tales, the people get cauhght in a trap. They go into a castle and the door shuts behind them and that always means, now they are in the self. Now they have reached that point in their psyche where they cannot run away from that it ought to do, knows now that are in the mousetrap and hitherto have not fullfilled the requirements of the Self and will be not released. “