The substance of your mind is apart from annihilation and apart from eternity; its essence is neither polluted nor pure. Calm and complete, it is equal in ordinary people and sages, functioning responsively without convention. All realms of experience and all states of being are only manifestations of your own mind--do the moon reflected in water or images in a mirror have origination and extinction?
If you actually know this, you are fully equipped. The reason that the sages have manifested a spiritual presence to provide exemplars, and have set forth a wide variety of puzzling sayings, is simply to illustrate the fundamental peace of the body of reality, bringing about a return to the root.