One of the most influential Enlightenment thinkers, German philosopher Immanuel Kant takes his place among Locke, Hume, and Berkeley as one of the intellectuals most commonly credited with ushering modernity into existence. In The Metaphysical Elements of Ethics , Kant takes on some of the most complex and engaging ideas about how humans can discern the right way to live. Recommended for philosophy buffs -- and anyone interested in expanding their intellectual horizons!