Convex and Concave
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Index Entry
Convex and Concave:
"Convex and concave only coexist.
"We cannot have the convex surface of the pingpong ball without the coexistence of the concave interior. You cannot have the convex surface of a pebble without the concave aspect of that surface as viewed from the center of the pebble with x-ray 'sight.'
"The sum of the exterior angles of every system's convexity is always the same as the sum of the interior angles of the system's concavity."
Citations
- MUSIC OF THE NEW LIFE, Chap. 2, U. or O. p.14, 10 Dec'64
