"A man must have a stout digestion to feed upon some men's theology; no sap, no sweetness, no life, but all stern accuracy, and fleshless definition. Proclaimed without tenderness, and argued without affection, the gospel from such men rather resembles a missile from a catapult than bread from a Father's hand."

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Every heat engineer knows he can design his heat engine reliably and accurately on the foundation of the second law [of thermodynamics]. Run alongside one of the molecules, however, and ask it what it thinks of the second law. It will laugh at us. It never heard of the second law. It does what it wants. All the same, a collection of billions upon billions of such molecules obeys the second law with all the accuracy one could want

— John Archibald Wheeler