From George MacDonald's "The Word of Jesus on Prayer":
"We know that the wind blows; why should we not know that God answers prayer?(Hat tip to CQOTD.)
I reply, What if God does not care to have you know it at second hand? What if there would be no good in that? There is some testimony on record, and perhaps there might be much were it not that, having to do with things so immediately personal, and generally so delicate, answers to prayer would naturally not often be talked about; but no testimony concerning the thing can well be conclusive; for, like a reported miracle, there is always some way to daff it; and besides, the conviction to be got that way is of little value: it avails nothing to know the thing by the best of evidence... 'But if God is so good as you represent Him, and if He knows all that we need, and better far than we do ourselves, why should it be necessary to ask Him for anything?'
I answer, What if He knows prayer to be the thing we need first and most? What if the main object in God's idea of prayer be the supplying of our great, our endless need - the need of Himself? Hunger may drive the runaway child home, and he may or may not be fed at home; but he needs his mother more than his dinner. Communion with God is the one need of the soul beyond all other need; prayer is the beginning of that communion, and some need is the motive of that prayer... So begins a communion, a talking with God, a coming-to-one with Him, which is the sole end of prayer, yea, of existence itself in its infinite phases. We must ask that we may receive; but that we should receive what we ask in respect of our lower needs, is not God's end in making us pray, for He could give us everything without that: to bring His child to His knee, God withholds that man may ask."