They can see their neighbors. Roosters and dogs can be heard from there. Still, they will age and die without visiting one another.
Laozi. . . These are notions of the mind, which is like a knife, always chipping away at the Tao, trying to render it graspable and manageable. But that which is beyond form is ungraspable, and that which is beyond knowing is unmanageable. There is, however, this consolation: She who lets go of the knife will find the Tao at her fingertips.
Laozi