Come to thy own aid

 Come to thy own aid, if thou carest at all for thyself, while it is in thy power.  Marcus Aurelius.  Meditations.  Book 3.  

Image: The Greatest Battles of the Roman-Persian Wars (Part 1) by Hayden Chakra.  https://about-history.com/the-greatest-battles-of-the-roman-persian-wars-part-1/