...the deva spoke this verse...:

Who has not tamed all vain conceits,1
Who lacks in wisdom, uncontrolled,
Heedless, in the woods may dwell alone,
Yet will not escape the realm of death.

[The Blessed One replied:]

Who, concentrated, leaves conceits behind,
His heart and mind2 set fair, and wholly freed,
Heedful dwelling in the woods alone,
Shall indeed escape the realm of death.3

Notes

1. Maanakaama: "conceit and lust."

2. Citta: "mind," but often like the metaphorical use of "heart" in English.

3. He will pass "beyond death" to Nibbaana.