Saint Albertus Magnus, also known as Albert the Great, was a German Dominican friar and bishop born around 1200. He is renowned for his contributions to philosophy, theology, and the natural sciences. Albertus was a teacher of Saint Thomas Aquinas and played a significant role in integrating Aristotelian philosophy with Christian doctrine. He was canonized as a saint in 1931 and declared a Doctor of the Church due to his extensive writings and teachings. Saint Albertus Magnus is the patron saint of scientists and philosophers, and his feast day is celebrated on November 15. His work laid the foundation for future scientific inquiry in the Middle Ages.