18 Root Bodhisattva Downfalls: praising oneself and belittling others; not sharing dharma teachings or wealth; not listening to others’ apologies; discarding the Mahayana teachings and propounding made-up ones; taking offerings; forsaking the holy dharma; disrobing monastics or committing such acts as stealing their robes; committing any of the five heinous crimes; holding a distorted, antagonistic outlook; destroying places such as towns; teaching voidness to those whose minds are untrained; turning others away from full enlightenment; turning others away from their pratimoksha vows; belittling the shravaka vehicle; proclaiming a false realization of voidness; accepting what has been stolen from the Triple Gem; establishing unfair policies; giving up bodhichitta.
18 Elements: the 6 sense organs, their objects, their perceptions.
18 Types of Questions of Fen Yang: asking for instruction, presenting one's understanding, investigating and discerning, meeting of minds, wrapping up/focusing, mental activity, seeking out, not understanding, lifting up, posing a question, intentional question, using things/events, real question, fabricated question, making sure, eliciting, clarifying, silent question.
18 Arhats: depicted in Mahayana Buddhism as the original followers of Gautama Buddha who have followed the Noble Eightfold Path and attained the four stages of enlightenment. : The Arhat Who Rides a Deer, The Joyous Arhat, The Arhat Raising an Alms Bowl, The Arhat Who Holds a Pagoda, The Arhat Who Meditates, The Arhat Who Crossed Rivers, The Arhat Astride an Elephant, The Arhat Who Plays With a Lion, The Arhat Who Reveals His Heart, The Long-Armed Arhat, The Arhat Deep in Thought, The Arhat Who Cleans His Ears, The Cloth Bag Arhat, The Banana Arhat, The Arhat With Long Eyebrows, The Gatekeeper Arhat, The Arhat Who Mastered a Dragon, The Arhat Who Tamed a Tiger.
18 Principal Insights: 1. The contemplation of impermanence abandons the perception of permanence. 2. The contemplation of suffering abandons the perception of pleasure. 3. The contemplation of non-self abandons the perception of self. 4. The contemplation of disenchantment abandons delighting. 5. The contemplation of fading away abandons lust. 6. The contemplation of cessation abandons originating. 7. The contemplation of relinquishment abandons grasping. 8. The contemplation of destruction abandons the perception of compactness. 9. The contemplation of passing away abandons the accumulation of karma. 10. The contemplation of change abandons the perception of stability. 11. The contemplation of the sign-less abandons the sign. 12. The contemplation of the desire-less abandons desire. 13. The contemplation of voidness abandons adherence (to the notion of permanent self). 14. The higher wisdom of insight into phenomena abandons adherence due to grasping at a core. 15. Correct knowledge and vision abandons adherence due to confusion. 16. The contemplation of danger abandons adherence due to attachment. 17. The contemplation of reflection abandons non-reflection. 18. The contemplation of turning away abandons adherence due to bondage.
18 All Knowable Things (dhatus): the six sense objects (visible forms, sounds, smells, tastes, textures, mental objects), six sense faculties (eye faculty, ear faculty, nose faculty, tongue faculty, body faculty, mental faculty), the six sense consciousnesses, eye-consciousness, ear-consciousness, nose-consciousness, tongue-consciousness, body-consciousness, mind-consciousness).
18 Freedoms and Advantages of Human Birth: freedom from the eight states where there is no opportunity to practice the Dharma (hells/preta realms, animals, long-living gods, uncivilized lands, incomplete faculties, wrong views, a buddha has not come). The Five Circumstantial Advantages (a buddha has come, he has taught the Dharma, the teachings have survived, there are followers of the teachings, there are favourable conditions for Dharma practice. The Five Personal Advantages (being a human being, born in a central land, with faculties intact, lifestyle not harmful or wrong, with faith in the three pitakas).