Born in Noyon, France, John Calvin (1509 – 1564) was a theologian and pastor who is best known as the principal figure of the Calvinist theology of Protestantism and his lead role as a reformer in Geneva during the Protestant Reformation. In 1536, he published the "Institutes of the Christian Religion," which became the cornerstone of the Calvinist theology. He lived most of his life in Geneva, Switzerland, where he established a theocratic system of government and a rigorous system of church discipline. His ideas on predestination, divine sovereignty, and the authority of scripture had a lasting impact on the Protestant Church. Calvin's teachings also influenced the development of Presbyterianism, Congregationalism, and the Reformed Church. Today, Calvinism is a major branch of Protestantism, with millions of followers around the world.