Hizo^ho^yaku T 2426.77.363-374; Gilded Key to the Secret Vault. The abridged （1 fasc.） and more widely studied version of Ku^kai's 空海 seminal treatise， 'The Ten Strata of Realization' 十住心论 （T2425）， completed in 825. It opens with a statement of the problem: countless texts of every religious inclination have been published and studied， and though we may pore over these until our deaths， how can we get to the root of it all? （内外缣缃千万轴。。。书死、讽死、本何为。） Living things endure a wide range of hardships and it is for this reason that there are so many kinds of remedies， reasons Ku^kai， who proceeds to classify these paths to deliverance -- synonymous with degrees of realization -- in ten ascending stages: 1. A goatlike mind 异生羝羊心 fixated on lust and hunger 但念淫食. 2. A retarded yet moderate mind 愚童持荠心， showing an emergent tendency to be charitable 施心萌动. 3. An infantile mind which fears not， 婴童无畏心 held by heretics going to heaven 外道生天. 4. A mind which recognises transitory aggregates but no permanent self， 唯蕴无我心 as articulated in the entire Pa^li canon 羊乘三藏. 5. A mind purged of karmic seeds， 拔业因种心 having mastered the twelvefold causation 修身十二. 6. A mind interdependent with others， that of the Maha^ya^na， 他缘大乘身 in which great compassion first manifests 大悲初发. 7. A mind aware that it is unborn， 觉心不生心 serene from comprehending emptiness in an instant 心原空寂. 8. A mind which knows Truly the One Way 如实一道心境. 9. A mind utterly without self-nature 极无自性心， just as the water's surface has no intrinsic nature 水无自性. 10. The hidden and lavish mind 秘密庄严心， revealed by the way of mantras when conventional medicines have cleared the dust 显乐拂尘、真言开库. Ku^kai further identifies the ten stages with different religious schools and the sama^dhi 三昧 of particular divinities， but reiterates that all were taught by the "Great Awakened， the Compassionate Father" 大觉慈父. The notion of "kinds of minds" draws on discussions in the first chapter of the Vairocana^bhisam!bodhi 大日经