Hilary Putnam dies today. He was 89. He was my thesis advisor (I urge all linguists to take a few philosophy courses as it really teaches you how to navigate the logic of an argument). He was also one of the most important philosophers of the later half of the 20th century. He wrote many papers on linguistic themes, and despite being off the mark, IMO, more often than not, he did take the cognitive revolution in linguistics seriously.
He and Chomsky go way back. I believe that he TAed a course that Chomsky took at U Penn. They knew each other well and debated important issues though out their lives. I think that Noam got the better of the debates, but Hilary did express views that were common among philosophers and doing so was a public service. Here's is an obit by Martha Nussbaum, a prof at U Chicago that knew him well.
Hilary had an an astounding breadth. He was part of a team of three that solved one of the famous Hilbert Problems, he wrote extensively on issues in the philosophy of mathematics, logic, language, science, physics and more. He went from being a staunch realist to being a rather (for me) hard to understand pragmatist. He changed his mind a lot, as do many serious thinkers. He wrote what is likely to remain one of the greatest collection of essays in analytic philosophy. He left a mark. Not bad.