Founder of the modern theory of probability, Pascal produced an essay on mathematics, when he was only 17, that highly regarded in academic circles. He invented the first digital calculator (1642-44), the syringe, the hydraulic press and discovered the law of pressure (1647-54). His first important, and non-scientific, work was his Provincial Letters (1656-57) directed against the Jesuits. His Pensees, a defence of Christianity, were published posthumously in 1670. His ideas on religion greatly influenced the later existentialists. |