Frederick Buechner said this quote
“ What's prayer? It's shooting shafts into the dark. What mark they strike, if any, who's to say? It's reaching for a hand you cannot touch. The silence is so fathomless that prayers like plummets vanish into the sea. You beg. You whimper. You load God down with empty praise. You tell him sins that he already knows full well. You seek to change his changeless will. Yet Godric prays the way he breathes, for else his heart would wither in his breast. Prayer is the wind that fills his sail. Else drift with witless tides. And sometimes, by God's grace, a prayer is heard. ”