Quote of the day
Birds sing after a storm; why shouldn't people feel as free to delight in whatever sunlight remains to them?
Girard Desargues

Born: March 2, 1591
Died: October 9, 1661 (aged 70)
Bio: Girard Desargues was a French mathematician and engineer, who is considered one of the founders of projective geometry. Desargues' theorem, the Desargues graph, and the crater Desargues on the Moon are named in his honour.