心，有明和无明两个层面。在觉性未开发前，生命处于无明状态，制造轮回，流转生死。一旦开启觉性，则能驱除黑暗，成就解脱。
The mind consists of two aspects: enlightenment and ignorance. Before the enlightened nature is developed, life stays ignorant, creating and repeating the cycle of birth and death. Once enlightened nature is awakened, the darkness of ignorance will be dispelled, and liberation can be achieved.