"If you study with a teacher for a long time, with both of you earnestly serving the Dharma, wonderful things can happen. Positions can change, and suddenly one day the teacher is the student and the student is the teacher. Incredible responsiveness occurs. The relationship between teacher and student is well expressed in a koan about a mother bird pecking from the outside of an egg and a baby bird pecking from the inside. Each is pecking away, trying to get rid of the eggshell. This image aptly reflects how a teacher and a student each work in their own way on the barriers to wisdom."

To Practice: Remember when teaching to let your student participate equally in the experience.

Jean Smith in The Beginner's Guide to Zen Buddhism