LARGE PRINT EDITION More at LargePrintLiberty.com. A work which contains 4 major pieces on metaphysics and ethics: the Groundwork of a Metaphysic of Ethics, an Inquiry into the a priori Operation of the Will (an extract from the Critique of Practical Reason), an Introduction to the Metaphysical Elements of Jurisprudence, and the Metaphysical Elements of the Doctrine of Virtue.