All true wisdom and all true faith are clearly expressed in the same moral law.
All the world is subject to one law, and all thinking beings have the same basic intellect. Therefore, all wise men share the same idea of perfection.
— Marcus Aurelius
The more I dedicate my time to two things, the more they fill my life with ever-increasing pleasure. The first is the sky above me, and the second is the moral law within me.
— Immanuel Kant
Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.
— Matthew 7:1-2