To enter by reason means to realize the essence through instruction and to believe that all living things share the same true nature, which isn't apparent because it's shrouded by sensation and delusion.

Unless you see your nature, all this talk about cause & effect is nonsense. Buddhas don't practice nonsense.

As long as you look for a Buddha somewhere else, you'll never see that your own mind is the Buddha

Freeing oneself from words is liberation.

Delusion means mortality. And awareness means Buddhahood.

I do not need any writing, since I transmit teaching beyond words and ideas.

Buddhas move freely through birth and death, appearing and disappearing at will.