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“Is there in our parks any tree more elegant and leafy than the Purkinje corpuscle of the cerebellum or the psychic cell, in other words, the famous cerebral pyramid?” he asked.

We often refer to our highways, roads and avenues as “arteries,” as if they carried corpuscles instead of cars, platelets rather than pedestrians.

I used to work as a delivery driver, a job that took me all around the city, my car a tiny corpuscle traveling through the vast bloodstream of Washington.

My senses seemed supersensitive and I was sure I could hear their food going down, their corpuscles moving through their bloodstreams, their alveoli inflating and deflating.

Atoms and corpuscles are not machines, but their interaction is determined by size, shape and hardness, just as the interaction of the parts of a clock are.