“You are not ignorant, madam,” continued he, “of what the bulk of philosophers, with the rest of mankind, deliver on that subject. They say, that the objects which most sensibly struck us the preceding day, employ our soul in the night. The traces which they imprinted on the fibres of our brain, subsist. The animal spirits, accustomed to flow to certain places, pursue a course which is become familiar to them: and thence arise these involuntary images which afflict or rejoice us. In this system I should think, that a happy lover ought always to be well served by his dreams. Nevertheless it frequently happens that a person who is not cruel to him, while he is awake, in his sleep treats him like a slave; or that instead of enjoying a charming woman, he finds a little deformed monster in his arms.”