"Law, in his terrible, cool voice, said,...'If you have not chosen the Kingdom of God, it will make in the end no difference what you have chosen instead.' Those are hard words to take. Will it really make no difference whether it was women or patriotism, cocaine or art, whiskey or a seat in the Cabinet, money or science? Well, surely no difference that matters. We shall have missed the end for which we are formed and rejected the only thing that satisfies. Does it matter to a man dying in a desert by which choice of route he missed the only well?
"It is a remarkable fact that on this subject Heaven and Hell speak with one voice. The tempter tells me, 'Take care. Think how much this good resolve, the acceptance of this Grace, is going to cost.' But Our Lord equally tells us to count the cost. Even in human affairs great importance is attached to the agreement of those whose testimony hardly ever agrees. Here, more. Between them it would seem to be pretty clear that paddling [near the shore] is of little consequence. What matters, what Heaven desires and Hell fears, is precisely that further step, out of our depth, out of our own control."
--C.S. Lewis, The Weight of Glory