“There is a Path which leads to that which is known as Initiation, and through Initiation to the Perfecting of Man; a Path which is recognized in all the great religions, and the chief features of which are described in similar terms in every one of the great faiths of the world. You may read of it in the Roman Catholic teachings as divided into three parts: (1) The Path of Purification or Purgation; (2) the Path of Illumination; and (3) the Path of Union with Divinity. You find it among the Mussulmans in the Sufi — the mystic — teachings of Islam, where it is known under the names of the Way, the Truth and the Life. You find it further eastward still in the great faith of Buddhism, divided into subdivisions, though these can be classified under the broader outline. It is similarly divided in Hinduism; for in both those great religions, in which the study of psychology, of the human mind and the human constitution, has played so great a part, you find a more definite subdivision. But really it matters not to which faith you turn; it matters not which particular set of names you choose as best attracting or expressing your own ideas; the Path is but one; its divisions are always the same; from time immemorial that Path has stretched from the life of the world to the life of the Divine.”

Source: Initiation, The Perfecting of Man (1923)