Blaise Pascal

Blaise Pascal (1623 CE–1662 CE) was a French mathematician, physicist, philosopher, and theologian whose foundational work spanned the natural and social sciences. A child prodigy born in Clermont-Ferrand, Pascal made pioneering contributions to geometry and physics—including the development of an early mechanical calculator (the Pascaline) and the formulation of Pascal's Law concerning fluid pressure. Following a profound mystical experience in 1654 CE, he abandoned his scientific pursuits to join the Jansenist movement at Port-Royal, shifting his focus to theology and philosophy. His major philosophical works, the Provincial Letters (1656 CE–1657 CE) and the posthumously published Pensées (1670 CE), defended Christianity against skepticism through an exploration of human psychology, reason, and faith, famously introducing the pragmatic decision-theory argument known as 'Pascal's Wager'.