Thomas Kjeller Johansen studied Philosophy and Classics at Cambridge, before taking up lectureships at Bristol, Edinburgh and Oxford. He has held a British Academy Research Readership, a membership at the Institute for Advanced Study, Princeton, and a fellowship the Center for Hellenic Studies, Washington DC. He is the author of Plato's Natural Philosophy (CUP, 2004), Aristotle on the Sense-Organs (CUP, 1998), and the translator of Plato, Timaeus and Critias (Penguin Classics, 2008).