Blaise Pascal (1623-1662), mathematician, physicist, inventor, and religious thinker was a man at odds with his time. The optimism of the Enlightenment and the belief among philosophers and scientists that the universe was both discoverable and rational made them feel invincible. Reason alone, declared the intellectuals, could discover a God of natural religion that was to replace the God of traditional Christianity. Pascal, on the other hand, was not so confident. In his Pensees, he wrote, "The eternal silence of these infinite spaces fills me with dread." For Pascal, the universe was full of a mystery that went far beyond the powers of reason. Blaise Pascal: Reasons of the Heart, the latest addition to Eerdmans LIBRARY OF RELIGIOUS BIOGRAPHY series, captures Pascal's life and times with a chronicle narrative based on the published sources and Pascal's own works. Marvin O'Connell takes readers on an eloquent journey into Pascal's world, showing the passion that drove the man and the radical spirituality he sought in his own heart. In the process, O'Connell also illumines the social, political, and religious intrigue of seventeenth-century Paris, especially the winner-take-all struggle between the Jesuits and the Jansenists, with whom Pascal himself was allied. Written in an enjoyable style accessible to all, this meticulously researched biography will acquaint readers with the life and thought of Blaise Pascal, a remarkable human being and luminous Christian thinker.