Note 10 — Chapter I

This classification of the sources of dreams has, however, been generally accepted for little more than a century. At an earlier period it was not usually believed to cover the whole ground. Thus Des Laurens (A. Laurentius) in the sixteenth century, in his treatise on the Disease of Melancholy (insanity), says that there are three kinds of dreams: (1) of Nature (i.e. due to external causes); (2) of the mind (i.e. based on memories); and, above both these classes, (3) dreams from God and the devil.