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Peter Kreeft Quote

Aristotle had discovered only half the principle of inertia—that a body at rest remains at rest unless moved by another—but not the other half—that a body in motion remains in motion unless acted on by another.

Peter Kreeft

Aristotle had discovered only half the principle of inertia—that a body at rest remains at rest unless moved by another—but not the other half—that a body in motion remains in motion unless acted on by another.

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About Peter Kreeft

Peter John Kreeft (; born March 16, 1937) is an American professor of philosophy at Boston College and The King's College. A convert to Catholicism, he is the author of over eighty books on Christian philosophy, theology and apologetics. He also formulated, together with Ronald K. Tacelli, Twenty Arguments for the Existence of God in their Handbook of Christian Apologetics.