The "Blue Lodge" is another name for the lodge in which an individual receives the degrees of Entered Apprentice, Fellow Craft and Master Mason. These degrees make up what is normally referred to as Craft Masonry, Symbolic Freemasonry and Speculative Masonry.
"It has never been discovered how or when blue became the characteristic
color of Craft Masonry, but the most probable explanation is the simple analogy
to the blue dome of heaven, the classified canopy, or star-decked firmament.
In Masonry blue indicates univeral brotherhood and instructs us that those
virtues should be as extensive as the blue arch of heaven itself." -Coil's
Masonic Encyclopedia
"Definition of Freemasonry. Misleading and oversimplified definitions of Freemasonry have been repeated for over a century. The most used would have on believe that Freemasonry's morality is "veiled". It is set forth clearly within the ritual. The symbols require explaining, not the literature or the the Craft. It is not science; it is not fixed or "unalterable." It is not a "religion" or the "handmaiden" of religion. To understand what a definition of Masonry should be, one must become a student of The Constitutions of Free Maosns as adopted in 1723, along with the numerous Charges. These have remained, and must remain, substantially the same if the Craft is to survive and prosper.......Freemasonry is a Fraternity composed of moral men of legal age who believe in God and, of their own free will, receive in lodges degrees which depict a system of morality that, as they grow in maturity, teaches them to be tolerant of the beliefs of others, to be patriotic, law-abiding, temperate in all things, to aidthe unfortunate, to practice Brotherly Love, and to faithfully accept and discharge solemn obligations......In short, Freemasonry is a way of life. As an organization, its purpose is to make good men better." -Coil's Masonic Encyclopedia