Fr. Bernard J.F. Lonergan, CC, SJ (1904-1984) (http://en.wikipedia.org/wiki/Lonergan and http://www.bernardlonergan.com/) was a Canadian Jesuit Priest and a philosopher-theologian in the Thomist tradition (http://en.wikipedia.org/wiki/Thomism).
In this landmark work of 1957 he offers a general account of knowledge in the natural sciences, humanities, philosophy and common sense. He presents a Transcendental Deduction with a Kantian flavour, a position on objectivity, the outline of a metaphysics, an ethics, a proof for the existence of God, and a preamble to religious faith. One could never say the project lacks ambition! His work is rated very highly in some circles. There is only one way to see if you agree.
875 pages in University of Toronto Press
ISBN 978-0802034557
Bernard Lonergan