A secret organization which originated from a treaty formed at a clandestine gather of authority figures from America, post-revolutionary Russia, and China at the onset of the 20th century.
One of their number was The Boss's father. In the 1930s, the last of the original members died, and the organization became a mere vestige of its former self. Colonel Volgin's father, responsible for laundering the Philosophers' funds, absconded with the money in the chaos that followed the war's end. Volgin later inherited the entirety of the Philosophers' Legacy.