The Deeper Symbolism of Freemasonry from The Meaning of Masonry by Walter Leslie Wilmshurst.

“Surely, then, it behoves us to acquaint ourselves with what that larger end consists, to enquire why the fulfilment of that purpose is worthy to be called a science, and to ascertain what are those ‘mysteries’ to which our doctrine promises we may ultimately attain if we apply ourselves assiduously enough to understanding what Masonry is capable of teaching us.” [via]