"Great theories are expansive; failures mire us in dogmatism and tunnel vision."

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He remembered having said to his uncle (with a solemn dogmatism better befitting a much younger man): "Surely it is possible to love with the head as well as the heart." Mr. Delagardie had replied, somewhat drily: "No doubt; so long as you do not end by thinking with your entrails instead of your brain.

— Dorothy L. Sayers