To study the symbolism of Masonry is the only way to investigate its philosophy. This is the portal of its temple, through which alone we can gain access to the sacellum where its aporrheta are concealed. Its philosophy is engaged in the consideration of propositions relating to God and man, to the present and the future life. Its science is the symbolism by which these propositions are presented to the mind. The work now offered to the public is an effort to develop and explain this philosophy and science. It will show that there are in Freemasonry the germs of profound speculation. If it does not interest the learned, it may instruct the ignorant. If so, I shall not regret the labor and research that have been bestowed upon its composition.Any inquiry into the symbolism and philosophy of Freemasonry must necessarily be preceded by a brief investigation of the origin and history of the institution. Ancient and universal as it is, whence did it arise? What were the accidents connected with its birth? From what kindred or similar association did it spring? Or was it original and autochthonic, independent, in its inception, of any external influences, and unconnected with any other institution?