Video: Maharishi on Yoga and Transcendental Meditation practice

Maharishi on Yoga and Transcendental Meditation practice:  
"Yoga we know is the summation of all the trends of mind - Yoga, Samadhi, Transcendental Consciousness. How it becomes perfected? Yoga becomes perfected when the Yoga state is not disturbed by anything. What could be the disturbing element—because that Yoga state is absolute silence—what could be disturbing to it? Only the activity