Martin Luther (10 Nov 1483 – 18 Feb 1546) was a German friar, priest, professor of theology and a significant figure in the Protestant Reformation. Luther denounced a number of teachings and practices of the Catholic Church. He strongly disputed the claim that freedom from God's punishment for sin could be achieved through indulgence or other financial means. His translation of the Bible vernacular made it more accessible for common folk, which had a massive impact on German culture. Martin Luther died convinced of the correctness of his Reformation theology, and with his decree of excommunication by Pope Leo X effective up to date.
The Large Catechism was designed by Martin Luther to aid the spiritual leaders of the Lutheran Church to introduce their teaching more effectively. Luther wanted his followers to remember that they should live a godly life instead of a worldly one. However Luther does not calls people to leave their worldly lives behind completely. Blunt and straightforward, this book is remains an inspiration. A very thoughtful and educative reading, regardless of your relation to Christianity.