Quoting Maxim Gorki without having read him

This is not a flashback as such, but I still thought it a remarkable experience - I was chatting with a friend yesterday, and we talked about arrogant and stuck-up people. She said she couldn't stand them, and I agreed, then I heard myself say: "I don't see the point of doing that, if we all take off our clothes we're all naked underneath." She looked at me and asked if I had read anything by Maxim Gorki and I replied: "No, why?" She then told me that Maxim Gorki had once said that, to people laughing about him behind his back for his rather humble appearance. Quite funny...coincidence, or did my brain indeed dig up a quote I must have known in my past life? I really wonder...