A man prayed, and at first he thought that prayer was talking. But he became more and more quiet until in the end he realized prayer is listening.
Prayer is a silent surrendering of everything to God.
As my prayer became more attentive and inward, I had less and less to say. I finally became completely silent... This is how it is. To pray does not mean to listen to oneself speaking. Prayer involves becoming silent, and being silent, and waiting until God is heard.
Prayer does not change God, but it changes him who prays.
It is a wonderful thing to see a first-rate philosopher at prayer. Tough-minded thinking and tenderhearted reverence are friends, not enemies. We have for too long separated the head from the heart, and we are the lesser for it. We love God with the mind and we love God with the heart. In reality, we are descending with the mind into the heart and there standing before God in ceaseless wonder and endless praise. As the mind and the heart work in concert, a kind of loving rationality pervades all we say and do. This brings unity to us and glory to God.
Just as in earthly life lovers long for the moment when they are able to breathe forth their love for each other, to let their souls blend in a soft whisper, so the mystic longs for the moment when in prayer he can, as it were, creep into God.