The art of teaching is also to know when to stop. It is good when people want to be better, physically, morally, spiritually, intellectually. But a fashion? No! Yoga is a painful art. It's not like dance or music, where the person watching gets pleasure. Only the person doing it finds joy. It has nothing to do with externals.
In: BKS Iyengar – obituary, The Telegraph, 20 August 2014