Crab Nebula - pg. 22

His long practice of solitary meditation has taught him, if nothing else, to distinguish the many forms of silence, which meet with only an unchanging and obtuse insensitivity in the untrained ear. There is, then -- among others -- a string silence, a wind silence, a percussion silence, no more allike than the instruments thus classified, but on occasion their sonorities meld into a symphonic silence in which slow, stately movements, or martial ones, alternate with sprightly little phrases annd silky arabesques, playing on a variety of motifs and rhythms in order to fully express the complexity of the situation, whatever that situation may be.
(Nor does Crab forget the variety of silence derived from floor or soot.)