Zoso is an ancient deity which refers it self as "Satan". Page says he doesn't know the meaning but he does, ever hear the phrase, "the greatest trick the devil ever played was making man believe he didn't exist." Page intentionally kept the world in the blind to spread this "symbol" everywhere without anyone knowing. I mean tons of Americans especially in their time would've shied away from this group if they had known page was deliberately stamping zoso "Satan" across everything, it's probably why page denied crowleys offer partnership, he knew i. That day in age timing was off to do such a public thing in satans name; It's Latin/Hebrew derived if I'm not mistaken. But either way Roberts symbol is for protection, hence the circle around the delicate feather.