There are two kinds of people one can call reasonable: those who serve God with all their heart because they know him, and those who seek him with all their heart because they do not know him.

found the same height of quicksilver. Between 1658 and 1659 he wrote on the cycloid and its use in calculating the volume of solids. The University of Waterloo Ontario Canada holds an annual math contest named in his honour.

In 1646 he and his sister Jacqueline identified with the religious movement within Catholicism known by its detractors as Jansenism. His father died in 1651. He built 20 of these machines (called pascal's calculator and later pascaline) in the following ten years.