Today is my 66th birthday. I continue to work steadily, receiving no social security money. (You are welcome, younger taxpaying workers.) I will celebrate by asking myself an arbitrary question. "Who are the most influential philosophers of the 18th and 19th century?" And I will answer it with some context-free listing of philosophers, attributing the choice of names to what unnamed authorities "consider" to be the case. Let's go. On the continent of Europe? Christian Wolff, Immanuel Kant, G.W.F. Hegel, Auguste Comte, Karl Marx, Friedrich Nietzsche all come to mind. The British isles? George Berkeley, David Hume, Thomas Reid, Adam Smith, Jeremy Bentham, Thomas Carlyle fit the bill. North America? Ah, there’s Jonathan Edwards, Benjamin Franklin, R.W. Emerson, Margaret Fuller, C.S. Peirce, and William James. Anywhere else? You pays your money and you takes your choice. Fuller is the only name among those 18 that might seem a non-canonical intrusio...