ISBN-13: 9781512373301 / Angielski / Miękka / 2015 / 130 str.
In the preparation of this philosophical treatise, the author has been at no pains to avoid saying what others had said before. Yet the book is original, so far as such a book can be or ought to be original. The author has directly copied nothing except Dugald Stewart's classification of the Desires. But as his reading for several years has been principally in the department of ethics, it is highly probable that much of what he supposes to be his own thought may have been derived from other minds.