The mind consciousness is clever and quick-witted, while the manas is heavy with afflictions—this is not a good sign. If the mind consciousness considers itself very clever, it will not examine its own mind, will not know how to reflect on itself, and thus will be unable to discover the afflictions within its own mind, unable to overcome itself and surmount obstacles. "Cleverness undone by cleverness"—that is exactly what this means.
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