Click on the phrases to see them in context. The original texts by Immanuel Kant and David Hume are available from the Gutenberg Projet.

It is especially remarkable that the practical conception of freedom is based upon the transcendental idea, and that the question of the possibility of the former is difficult only as it involves the consideration of the truth of the latter.

The idea of a moral world has, therefore, objective reality, not as referring to an object of intelligible intuition--for of such an object we can form no conception whatever--but to the world of sense--conceived, however, as an object of pure reason in its practical use--and to a corpus mysticum of rational beings in it, in so far as the liberum arbitrium of the individual is placed, under and by virtue of moral laws, in complete systematic unity both with itself and with the freedom of all others.