Hilary Putnam
Towards the end of the 20th century there was a resurgence of interest in pragmatism. Largely responsible for this are Hilary Putnam and Richard Rorty. Rorty is famous as the author of "Philosophy and the Mirror of Nature" and "Philosophy and Social Hope". Hilary Putnam is well known for his quasi-empiricism in mathematics, his challenge of the brain in a vat thought experiment, and his other work in philosophy of mind, philosophy of language, and philosophy of science.