Saint Justin Martyr was an early Christian apologist and philosopher born around 100 AD in Flavia Neapolis, present-day Nablus, Palestine. He is best known for his writings that defended Christianity against pagan criticisms and sought to explain the faith to a broader audience. His most notable works include the "First Apology" and "Second Apology," where he addressed the Roman Emperor and the Senate, advocating for the rights of Christians. Justin was martyred around 165 AD in Rome for refusing to renounce his faith. He is recognized as a saint in both the Roman Catholic Church and the Eastern Orthodox Church. His feast day is celebrated on June 1, honoring his contributions to early Christian thought and his unwavering commitment to his beliefs.