What special symbols are there in Freemasonry?
The two most widely known Masonic symbols are the square and the compasses. Among their many meanings, the square (which has two immovable legs at a ninety-degree angle) represents matter, and the compasses (which have movable or adjustable legs) represent spirit or consciousness. The fact that the square and compasses are regularly shown in combination suggests that matter and consciousness are interdependent realities.