Humor is the only test of gravity, and gravity of humor, for a subject which will not bear raillery is suspicious, and a jest which will not bear serious examination is false wit.
Aristotle (384–322 BC) was an ancient Greek philosopher and scientist. His writings cover many subjects – including physics, biology, zoology, metaphysics, logic, ethics, aesthetics, poetry, theater, music, rhetoric, linguistics, politics and government – and constitute the first comprehensive system of Western philosophy. He was Plato's student and Alexander the Great's tutor.
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