"No one knows the gods."
Translation:Nemo deos scit.
In many languages, say German or French, you have to distinguish between kennen/connaître and wissen/savoir. In Latin, it would be cognosco v scio. Everybody 'knows' the gods (scio), i.e., what they are called and what they represent, but nobody 'knows' the gods (cognosco), i.e., can predict what they will do.