What are the most important works in 20th century philosophy?

Here’s a list based on philosopher Douglas Lackey’s 1999 survey of philosophers. The results were published in The Philosophical Forum. Interesting that the full list is dominated by works in epistemology. Metaphysics and ethics are less represented by a significant margin. The top ten books cited:1. Wittgenstein, Philosophical Investigations [179 citations]2. Heidegger, Being and Time […]