Koan
Pointing to the mind
A special transmission outside the scriptures, not depending on words and letters. Pointing directly to the human mind, seeing one's nature and becoming Buddha.
Traditional verse attributed to Bodhidharma
How to sit with it
No book can do your sitting for you. Put this down and sit for two minutes.
Read it once more, slowly. Then sit for two minutes and let it stay in the background. There is nothing to solve. New to this? Read what a koan is.