Baruch Spinoza is sometimes called “the father of modernity.”  Spinoza, along with Descartes and Leibniz, is considered on of the great rationalists  of the 16th and 17th centuries.   Of the three of them, Spinoza was philosophically the most radical.  Both Descartes and Leibniz found a place in their systems for something like the traditional Judeo-Christian God, a personal God, who created the rest of us.  Spinoza denied the authority of the Bible, the Judeo-Christian idea of a transcendent God, and opened the door to the secular philosophy of the modern age.