Quote of the day
My yesterdays walk with me. They keep step, they are gray faces that peer over my shoulder.
William B. Bonnor

Born: September 13, 1920
Died: August 17, 2015 (aged 94)
Bio: William Bowen Bonnor was a mathematician and gravitation physicist best known for his research into astrophysics, cosmology and general relativity. For most of his academic career he was a professor of mathematics at the University of London.