Blaise Pascal (1623— 1662) is a famous French mathematician, physicist, philosopher and essayist. Blaise Pascal was born in clermont-ferrand, Auvigne Province on June 2009 1623. He is the third brother and the only boy in the family. Pascal died in August of 1662 at the age of 39. In order to commemorate Pascal's contribution, later generations named the unit of pressure after him, abbreviated as Pa, with the symbol PA.