Reason

“Reason is the faculty that identifies and integrates the material provided by man’s senses.” — Ayn Rand

On the other hand, shake off all the fears & servile prejudices, under which weak minds are servilely crouched. Fix reason firmly in her seat, and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blindfolded fear.” — Thomas Jefferson, Letter to Peter Carr