In order to see a fish you must watch the water
Reality has no inside, outside, or middle part.
The ultimate Truth is beyond words. Doctrines are words. They're not the Way.
I do not need any writing, since I transmit teaching beyond words and ideas.
The mind is the root from which all things grow. If you can understand the mind, everything else is included.
Unless you see your nature, all this talk about cause & effect is nonsense. Buddhas don't practice nonsense.