ترجمة - برتغالية برازيلية-لاتيني - Conhece-te a ti mesmo para seres quem és.

Goncin, the Latin consecutio temporum says that if you use present in the main sentence, this is what should appear in the secondary sentence, to make the
correct coordination - in your case conjunctivus - present. I'm saying this to explain why I will modify.