Common sense is a simple and non-self-conscious use of logic.

Ayn Rand, question period following the lecture
The Philosophy of Objectivism lecture series, Lecture 11

That which today is called “common sense” is the remnant of an Aristotelian influence.

“For the New Intellectual”
For the New Intellectual, 41

Americans are the most reality-oriented people on earth. Their outstanding characteristic is the childhood form of reasoning: common sense. It is their only protection. But common sense is not enough where theoretical knowledge is required: it can make simple, concrete-bound connections — it cannot integrate complex issues, or deal with wide abstractions, or forecast the future.

“Don’t Let It Go”
Philosophy: Who Needs It, 211

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