Sokuzan’s talk is inspired by Yogacara teachings on The Three Natures: the imaginary, the dependent, and the fulfilled. He references a verse from “The Teachings of the Three Own Beings” by Vasubandhu, a fourth century Indian Buddhist scholar-monk:
“The constant state of not being found of “how it appears” in that which appears, can be known as the fulfilled own being…”
If we don’t know what something is, instead of letting it be unknown we project onto it with our uninvestigated ideas, opinions, judgements and beliefs because of fear. In Buddhism, the ritual forms like sitting practice, bowing, and sutra chanting are intended to support your consciousness by providing the structure to train your mind. Have a willingness to not know, give this the benefit of the doubt, and trust yourself. Only you know what you have to do.