John R. Perry (b. 1943) is Henry Waldgrave Stuart Professor of Philosophy at Stanford University. He has made significant contributions to areas of philosophy, including logic, philosophy of language, metaphysics, and philosophy of mind. He is known primarily for his work on situation semantics (together with Jon Barwise), reflexivity, indexicality, and self-knowledge. Wikipedia
The definitive Wikipedia entry for John Perry. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/John_Perry_%28philosopher%29