Page "Hermeticism" Paragraph 54

The order maintained the tightest of secrecy by severe penalties for loose lips.

Overall, the general public was left oblivious to the actions and even existence of the Golden Dawn, making the policies a success.

This secrecy was broken first by Aleister Crowley, in 1905, and later by Israel Regardie himself in 1940, giving a detailed account of the order's teachings to the general public.