Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
"μηδεὶς" translates to "no one", whereas "μη" translates to "don't". I choose to interpret AMS' phrase as "Do learn about geometry, otherwise Plato will not let you in his Academy". By the way the word "μη" is still used in modern Greek in the same way.
