I have been using this verse of the Bhagavad Gita as a theme for the past few yoga classes. Here are a few different versions. "As a lamp in a windless place Does not flicker, to such is compared The yogin of controlled mind, Performing the yoga of the Self." The Bhagavad Gita, by Winthrop Sargeant "When meditation is mastered, the mind is unwavering like the flame of a lamp in a windless place." The Bhagavad Gita, translated by Eknath Easwaran "A lamp sheltered from the wind