The first wave of this revolution—inaugurated by early-modern thinkers dating back to the Renaissance—insisted that man should employ natural science and a transformed economic system to seek mastery of nature. The second wave—developed largely by various historicist schools of thought, especially in the nineteenth century—replaced belief in the idea of a fixed human nature with belief in human “plasticity” and capacity for moral progress. These two iterations of liberalism—often labeled “conservative” and “progressive”—contend today for ascendance, but we do better to understand their deep
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