Your worst enemies won't harm you as much your own unguarded thoughts.
— Buddha

When there is no enemy within, the enemy outside can do you no harm.
African Proverbs harms quote

He who lives in harmony with himself lives in harmony with the universe.
— Marcus Aurelius

The power of intuitive understanding will protect you from harm until the end of your days.
— Lao Tzu

Once we know our weaknesses they cease to do us any harm.
— harms quotation by G. C. (Georg Christoph) Lichtenberg