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“He couldn’t explain it, but Quentin could tell when it was working. He could sense his words and gestures getting traction on the mysterious magical substrate of the universe. He could feel it physically. His fingertips got warm, and they seemed to leave trails in the air. There was a slight resistance, as if the air were getting viscous around him and pushing back against his hands and even against his lips and tongue. His mind buzzed with a caffeine-cocaine fizz. He was at the heart of a large and powerful system, he was its heart. When it was working, he knew it. And he liked it.”
― Lev Grossman, The Magicians