David Kellogg Lewis (1941–2001) was an influential American philosopher known for his work in various fields, including metaphysics, the philosophy of language, and epistemology. He is perhaps best known for his contributions to modal realism, the theory of possible worlds, and his discussions on convention, truth, and the nature of meaning. Here are some key aspects of his philosophy and thinking:
### 1. Modal Realism
Lewis is primarily


