It is a remarkable work of scholarship has written Irene Mainguy, to apprehend all aspects of Freemasonry in the first three degrés.Irène Mainguy explores not only the symbolic aspects of this brotherhood, but also the historical aspects and esoteric, thus achieving a veritable encyclopedia of Freemasonry. A book that every master mason should acquire but is useless for that belongs to the Masonic order. A "Must have" unparalleled.