The Interpretation of Dreams by Sigmund Freud Chapter 6 Page 18

would not have produced a dream; the motive power needed by the dream had to be contributed by a wish, and it was the affair of the worriment to procure for itself such wish as a motive power of the dream. To speak figuratively, it is quite possible that a day thought plays the part of the contractor (entrepreneur) in the dream. But it is known that no matter what idea the contractor may have in mind, and how desirous he may be of putting it into operation, he can do nothing without capital; he must depend upon a capitalist to defray the necessary expenses, and this capitalist, who supplies the psychic expenditure for the dream is invariably and indisputably a wish from the unconscious, no matter what the nature of the waking thought may be.

In other cases the capitalist himself is the contractor for the dream;