Yes, answered the spirits; for every human creature can create an immaterial world fully inhabited by immaterial creatures, and populous of immaterial subjects, such as we are, and all this within the compass of the head or skull; nay, not only so, but he may create a world of what fashion and government he will, and give the creatures thereof such motions, figures, forms, colours, perceptions,

etc. as he pleases, and make whirlpools, lights, pressures, and reactions, etc.