|Chapter 6, Verse 19|

यथा दीपो निवातस्थो नेङ्गते सोपमा स्मृता।

योगिनो यतचित्तस्य युञ्जतो योगमात्मनः।।6.19।।

ॐ

Transliteration / Meaning

yathā dīpo nivāta-stho neṅgate sopamā smṛitā
yogino yata-chittasya yuñjato yogam ātmanaḥ

Translation

As a lamp in a windless place does not waver, so the transcendentalist, whose mind is controlled, remains always steady in his meditation on the transcendent self.

Purport by Srila Prabhupada

A truly Krishna conscious person, always absorbed in transcendence, in constant undisturbed meditation on his worshipable Lord, is as steady as a lamp in a windless place.