Summary
This quote expresses the idea that sometimes individuals possess vast knowledge about external things like the universe or the world around them, yet remain ignorant of their own selves. It highlights the paradox of individuals who may be well-informed about various subjects but lack self-awareness or understanding of their own strengths, weaknesses, desires, and fears. It underscores the importance of introspection and self-reflection, suggesting that true knowledge should start from within before expanding to the external world.