“In contrast to logic, there is common sense, or still better, the Spirit of Reasonableness.”

“He had a better mind and a more rigorous temperament than me; he thought logically, and then acted on the conclusion of logical thought. Whereas most of us, I suspect, do the opposite: we make an instinctive decision, then build up an infrastructure of reasoning to justify it. And call the result common sense.”

“Human beings have always preferred common sense to logic.”

“You could say all you liked about reason and logic and common sense and imagination, but when the chips were down the one skill you needed was the ability to think about absolutely nothing whatsoever.”

“Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.”

“It is a thousand times better to have common sense without education than to have education without common sense.”