Hans Driesch 
Revival: Ethical Principles in Theory and Practice (1930) [PDF ebook] 
An Essay in Moral Philosophy

Almost all the existing modern systems of Ethics deal with formal definitions, and at bottom repeat more or less the same thing about them in slightly different words. In this work these are a side issue, and therefore are treated briefly. Their treatment in Section I is based upon the author’s theoretical works the Theory of Order and the Theory of Reality, but will be intelligible to those who are not acquainted with those works. The chief concern is moral teaching — that is, the practical element.