In full: Lord Sacks speech that brought Vatican conference to its feet

Great conclusion:

And so it has been ever since, that when a man and woman turn to one another in a bond of faithfulness, God robes them in garments of light, and we come as close as we will ever get to God himself, bringing new life into being, turning the prose of biology
into the poetry of the human spirit, redeeming the darkness of the world by the radiance of love.