George Boole reportedly said, "A real mathematician ... must be something more than a mere mathematician, he must be also something of a poet." It seems to me that something similar could be said about being a yoga teacher in 2020, and that a successful teacher must be more than a mere yoga teacher. Yoga isn't "just exercise" anymore than it is "mere mathematics." But what else more "must" a yoga teacher be?
Yogis around the world regard Patañjali's Yoga Sūtras as a foundational text. Patañjali offers helpful advice on a wide variety of topics, but this article will focus on just one: loving-kindness.