True Nature manifests as human nature in human beings, while it is the Buddha Nature in Buddhas. Both the human nature and the Buddha Nature are of the same essence, which is the True Nature, also known as “True Thusness.” “True” means it is unchanging, and “Thusness” means it manifests according to conditions. What is true is the truth about the Law of Cause and Effect, which not only governs the secular realm but also the supra-mundane. In fact, the Law of Cause and Effect works throughout the Ten Dharma Realms. It is because the True Nature is empty that we see the Law of Cause and Effect at work in all phenomena.