Marcus Aurelius was a Roman emperor and a Stoic philosopher who lived from 121 to 180 AD. The quote emphasizes the importance of valuing the small skills and trades we learn throughout life. To 'love the little trade' suggests finding joy in even basic tasks, while 'be content therewith' reminds us to feel satisfied with our abilities. This message is relevant because it encourages individuals to maintain a positive mindset. By recognizing the value in what we already know and do, we can cultivate happiness and resilience in our lives.