 Berkeley, George |  Hume, David |  Leibniz, Gottfried Wilhelm |  liberalism |  Locke, John: moral philosophy |  Locke, John: on freedom |  Locke, John: on personal identity |  Locke, John: philosophy of science |  Locke, John: political philosophy |  Masham, Lady Damaris |  personal identity |  substance |  tropes 