"In essentials, unity; in non-essentials, liberty; in all things, charity" is a famous Christian principle, often attributed to 17th-century German theologian Rupertus Meldenius, meaning Christians should agree on core doctrines (unity), allow freedom in secondary beliefs (liberty), and always show love (charity). It promotes focusing on core tenets like the Trinity and Christ's resurrection, while accepting diverse practices, always with an underlying love for fellow believers.
