Confined/Unconfined

Preparing a review session before students begin the examination weeks. I select a few representative passages from the course reader and plan to discuss them in class. Mental note: although not selected, mention the highly twittable section 3.3 from the Zhuangzi. Here in translation by A. C. Graham:

My life flows between confines, but knowledge has no confines. If we use the confined to follow after the unconfined, there is danger that the flow will cease; and when it ceases, to exercise knowledge is purest danger.