The most powerful prayer, one well-nigh omnipotent, and the worthiest work of all is the outcome of a quiet mind. The quieter it is the more powerful, the worthier, the deeper, the more telling and more perfect the prayer is. To the quiet mind all things are possible. What is a quiet mind? A quiet mind is one which nothing weighs on, nothing worries, which, free from ties and from all self-seeking, is wholly merged into the will of God and dead to its own.
Meister EckhartThe second means of attraction which He used is Emptiness, as we see when we place one end of a hollow pipe in water, and draw up it by suction; the water runs up the stem to the mouth, because the emptiness of the pipe, from which the air has been drawn, draws the water to itself.
Meister Eckhart