Volume 1 of 2. The reader will perceive that this work is not described in the title as having moral philosophy for its subject, but is entitled Elements of Morality. The distinction between the two subjects to which their two terms may be most appropriately applied is important. The difficulty of constructing a solid system of morality may be expected to be great in proportion to its great value and extensive bearings. This acknowledged difficulty in the task may procure some indulgence to him who undertakes it.