 Eventually, in October 1945 the "Imprimatur" was issued, and in 1946, the book was published (though only as an edition of 700 copies, due to ongoing paper shortages).De Lubac's overall question in "Surnaturel" is therefore how human persons in the natural order can be interiorly directed to the order of grace that fulfils them, without in the least possessing this grace in anticipation, and without being able at all to claim it for themselves.In the book, de Lubac attempts to show how, in an attempt to answer this question, what he calls "the system of pure nature" had come to prevail in Catholic theology.