The critical attacks of Hume and Kant mark a watershed in the history of the cosmological argument. Leibniz and Wolff were probably the last significant philosophers who felt it sufficient simply to present the argument in a brief form, confident that it needed no further underpinning. Hume and Kant ushered in what might be called the modern era of the cosmological argument; things could never be quite the same after their sceptical critique: Arthur
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