Summary
This quote suggests that one can guard against vanity by genuinely understanding oneself. When we possess deep self-knowledge, we become aware of our strengths and weaknesses and gain a sense of humility. This self-awareness prevents us from being overly preoccupied with our own importance or seeking validation from external sources. Instead, we recognize our true worth and prioritize authentic connections and personal growth over superficial validation. Ultimately, the quote emphasizes that true knowledge of oneself acts as a safeguard against becoming vain or egocentric.