The Degrees of Knowledge is a 1932 book by the French philosopher Jacques Maritain, in which the author adopts St. Thomas Aquinas’s view called critical realism and applies it to his own epistemological positions.According to critical realism, what we know is identical with what exists, and to know a thing is for its ‘essence’ to exist immaterially in the mind. In The Degrees of Knowledge, Maritain applies this view as he seeks to explain the nature of knowledge, not only in science and philosophy, but also in religious faith and mysticism. Maritain argues that there are different ‘kinds’ and ‘orders’ of knowledge and, within them, different ‘degrees’ determined by the nature of the thing to be known and the ‘degree of abstraction’ involved. The book is divided into two parts: Part one discusses the degrees of knowledge for science and philosophy – or ‘rational knowledge,’ and part two discusses the degrees of knowledge for religious faith and mysticism – or ‘super-rational knowledge.’ Source: Wikipedia (en)