"If I'm interrupted, it's just a minor inconvenience, but not a disaster, because it's easy to get back where I was: that is, the paint has not changed consistency; the light has not moved."

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When I speak of "cycles," I am referring to lengthy intervals of relative homogeneity, if not in the resolving of problems, than at least with respect to the consistency of their capacity to productively irritate.

— Brian Ferneyhough