"Everyone who observes himself doubting observes a truth, and about that which he observes he is certain; therefore he is certain about a truth. Everyone therefore who doubts whether truth exists has in himself a truth on which not to doubt.... Hence one who can doubt at all ought not to doubt the existence of truth."

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Source: Saint Augustine of Hippo, Catholic Way Publishing (2015). “The City of God”, p.468, Catholic Way Publishing

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Saint Augustine

Theologian, Philosopher

Saint Augustine was a theologian and philosopher whose works, particularly 'Confessions,' profoundly influenced Christian thought and Western philosophy.

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