The phrase "Don't fart above your arsehole" from Diana Gabaldon's "Dragonfly in Amber" serves as a vivid reminder to know our limits and maintain humility. It suggests that one should be cautious and stay grounded, avoiding actions that could lead to embarrassment or trouble. This blunt advice encapsulates the importance of being aware of one's own capabilities and the potential consequences of overreaching.

This quote reflects the straightforward and often humorous style Gabaldon employs throughout her writing. By using such direct language, she connects with readers on a personal level, offering wisdom in an unexpected manner. It encourages self-awareness and a realistic view of one's place in the world, resonating with themes of personal growth and accountability found in her work.