39. There is no fear for an awakened one, whose mind is not sodden (by lust) nor afflicted (by hate), and who has gone beyond both merit and demerit.
40. Realizing that this body is as fragile as a clay pot, and fortifying this mind like a well-fortified city, fight out Mara with the sword of wisdom. Then, guarding the conquest, remain unattached.
– Dhammapada III – Cittavagga: The Mind 39 – 40