John Perry is Professor of Philosophy at Stanford University, co-host of the award-winning radio program "Philosophy Talk," and author of many books including Knowledge, Possibility, and Conciousness and Identity, Personal Identity, and the Self.

John Perry is Professor of Philosophy at Stanford University, co-host of the award-winning radio program "Philosophy Talk," and author of many books including Knowledge, Possibility, and Conciousness and Identity, Personal Identity, and the Self.

John Perry is Professor of Philosophy at Stanford University, co-host of the award-winning radio program "Philosophy Talk," and author of many books including Knowledge, Possibility, and Conciousness and Identity, Personal Identity, and the Self.