Philosophy is the work of rational speculation.
It is reason which, starting from a few rational principles, tries to solve the supreme metaphysical problems regarding God, the world and man. Religion does not demonstrate, but affirms. It presents itself as a proposition of wisdom, as a positive assertion expressed in the form of dogma, and does not appeal to the intellect but to the will, whose assent it requests. Religion, therefore, is distinguished from philosophy in that the former works on the will, the latter on the intellect. And the assent of the will, which in philosophy is justified only by reason, in religion is justified by authority.