You have managed to impress us and prove to us that not everyone easily falls into the culture of myth. There are people who invest a little thought before they immortalize unfounded information.
This phrase means one must be careful when appointing a guardian, and make sure someone is watching them as well. Quem vigia os vigilantes? O que os vigilantes vigiam? Até que os vigilantes venham Vigilantes odeiam outros vigilantes Escolha a tradução mais próxima da frase latina acima.