In the Hindu tradition with Sri Chinmoy:

"Meditation is silence, energizing and fulfilling. Silence is the eloquent expression of the inexpressible."

"When I pray, I talk and God listens. When I meditate God talks and I listen."

"All real spiritual teachers teach in silece."

"Meditation speaks. It speaks in silence. It reveals that our life is Eternity itself."

"How do we meditate silently? Just by not talking, just by not using words, we are not doing silent meditation. Silent meditation is totally different. When we start meditating in silence, we feel the bottom of a sea within us and without. The life of activity, movement and restlessness is on the surface, but deep below, underneath our human life, there is poise and silence. We imagine this sea of silence within us, or we feel that we are nothing but a sea of poise itself."