Chronology of Blaise Pascal - World of Biography

June 19, 1623	Birth of Blaise Pascal in Clermont – Ferrand, France.
1626	Death of Blaise’s mother.
1631	His father Etienne moved to Paris with his three children. Blaise proved to be exceptional in mathematics.
1638	After opposing a fiscal measure of Richelieu, Etienne went into hiding, leaving his children in Paris.
1640	He wrote Essai Pour les Coniques [An Essay on Conic Sections].
1642	Blaise began to work on his calculating machine with an aim to assist his father in the computation of taxes.
1646	Pascal's first conversion as happening in the year.
1647	Visited by Rene Descartes and a discussion ensued on atmospheric pressure and the function of barometer.
1648	Wrote Treatise on Conic Sections, after returning to Clermont.
1650	Moved to Paris.
November 23, 1654	He felt a two-hour ecstatic vision that led him to second conversion.
January 7, 1655	He joined his sister Jacqueline at a retreat to Port-Royal. He defended the great mathematician Arnauld against the Jesuits who tried to expel him.
1656	Appearance of the first of The Provincial Letters.
1658	Lectures on his apologetics to the leaders of the convent Port-Royal.
1659	Became ill.
August 17, 1662	He died in his sister Gilberte' house at midnight, in Paris.