Reading guide
A five-link causal chain
Ethics (sīla) is a vital condition (upanisā) for right immersion (sammāsamādhi); right immersion for true knowledge and vision (yathābhūtañāṇadassana); true knowledge and vision for disillusionment and dispassion (nibbidāvirāga); and disillusionment and dispassion for the knowledge and vision of freedom (vimuttiñāṇadassana).
Destroyed at the root
An unethical person, lacking ethics, has already ‘destroyed’ the vital condition for right immersion — and because each link in the chain depends on the one before it, that single failure cascades forward, destroying the condition for every subsequent stage as well.
The tree simile
A tree lacking branches and foliage cannot bring its shoots, bark, softwood, and heartwood to fullness — a single, economical image for how a missing foundational stage prevents everything built on top of it from maturing, however much apparent effort goes into the later stages alone.
The chain fulfilled
The positive mirror runs the same five links forward: ethics fulfilled gives immersion its vital condition fulfilled, and so on up to the knowledge and vision of freedom — with the tree, fully branched and foliaged, bringing all its parts to fullness in turn.
A classical formula, elegantly compressed
This upanisā (‘vital condition’) sequence is one of the most recognizable causal chains in the early texts, tracing how liberation unfolds stage by stage rather than arising all at once — this discourse states it with unusual economy, in five links and one simile.
Key terms
The text
The chain destroyed
§1There Venerable Sāriputta addressed the mendicants: “Reverends, an unethical person, who lacks ethics, has destroyed a vital condition for right immersion. When there is no right immersion, one who lacks right immersion has destroyed a vital condition for true knowledge and vision. When there is no true knowledge and vision, one who lacks true knowledge and vision has destroyed a vital condition for disillusionment and dispassion. When there is no disillusionment and dispassion, one who lacks disillusionment and dispassion has destroyed a vital condition for knowledge and vision of freedom. Suppose there was a tree that lacked branches and foliage. Its shoots, bark, softwood, and heartwood would not grow to fullness. In the same way, an unethical person, who lacks ethics, has destroyed a vital condition for right immersion. When there is no right immersion, one who lacks right immersion has destroyed a vital condition for true knowledge and vision. When there is no true knowledge and vision, one who lacks true knowledge and vision has destroyed a vital condition for disillusionment and dispassion. When there is no disillusionment and dispassion, one who lacks disillusionment and dispassion has destroyed a vital condition for knowledge and vision of freedom.
The chain fulfilled
§2An ethical person, who has fulfilled ethics, has fulfilled a vital condition for right immersion. When there is right immersion, one who has fulfilled right immersion has fulfilled a vital condition for true knowledge and vision. When there is true knowledge and vision, one who has fulfilled true knowledge and vision has fulfilled a vital condition for disillusionment and dispassion. When there is disillusionment and dispassion, one who has fulfilled disillusionment and dispassion has fulfilled a vital condition for knowledge and vision of freedom. Suppose there was a tree that was complete with branches and foliage. Its shoots, bark, softwood, and heartwood would grow to fullness. In the same way, an ethical person, who has fulfilled ethics, has fulfilled a vital condition for right immersion. When there is right immersion, one who has fulfilled right immersion has fulfilled a vital condition for true knowledge and vision. When there is true knowledge and vision, one who has fulfilled true knowledge and vision has fulfilled a vital condition for disillusionment and dispassion. When there is disillusionment and dispassion, one who has fulfilled disillusionment and dispassion has fulfilled a vital condition for knowledge and vision of freedom.”
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