Physicist and Mathematician.

Sir Roger Penrose (born 8 August 1931; OM, FRS), is an English mathematical physicist, recreational mathematician, philosopher and Emeritus Rouse Ball Professor of Mathematics at the Mathematical Institute of the University of Oxford, as well as Emeritus Fellow of Wadham College. He is internationally renowned for his scientific work in mathematical physics, in particular his contributions to general relativity and cosmology. He has received a number of prizes and awards, including the 1988 Wolf Prize for physics which he shared with Stephen Hawking for their contribution to our understanding of the universe.

Source:

1.) During an interview with BBC Radio 4 on September 25, 2010, Penrose states, "I'm not a believer myself. I don't believe in established religions of any kind. I would say I'm an atheist", during a discussion on the Big Bang Theory. [1]