Quote of the day
At each increase of knowledge, as well as on the contrivance of every new tool, human labour becomes abridged.
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.