Then he thought: This tree is not enough, it would be nice to have a house; and a beautiful little house was there. Then he thought: Walking in the woods is very tiring, I must have a chariot; and the chariot and the horses were there. Then he was very astonished and could not understand. Then he thought: Is this all true, or is it only imagination; and then everything disappeared, only the hard stones remained and the tree above. That is the story of the mind.