Pradyumna: "The effect of devotional service becomes manifest by complete elimination of these effects of passion and ignorance. The devotee is fixed at once in the mode of goodness, and he makes further progress to rise up to the position of vasudeva, or the state of unmixed sattva, or śuddha-sattva state. In this śuddha-sattva state only can one always see Kṛṣṇa state, eye to eye, by dint of pure affection for the Lord. A devotee is always in the mode of unalloyed goodness; therefore he harms no one. But the nondevotee, however educated he may be, is always harmful. A devotee is neither foolish nor passionate. The harmful, foolish, and passionate cannot be devotees of..."
Prabhupāda: The... It is said, maṇinā bhūṣitaḥ sarpaḥ kim asau na bhayaṅkaraḥ. Snake. Some snakes are decorated with jewel on the hood. So this materialist, however qualified he may be, just like jewel on the head.