Yoga is not a thing to be merely talked about, read in books, and heard through others. Yoga is for practice in life. Yoga which does not soften the heart and fill it with the pure emotion of love, compassion, and peace is not worth the name. Real concentration of mind and meditation of God in the chamber of his heart does bring about an enormous change in the devotee. His transformed life becomes a beacon light for others. Through thought, word, and deed he pours out love and bliss upon all. If not to live such a life, what use is there for someone to speak of and wish to hear of yoga ?
Swami Ramdas The Divine Life