“A dog smells in order to find out if the person in question is that It to which its affections cling. The room, or stable, may be full of odours, many of them for a dog sweeter. But he is not smelling for the pleasure of that smell, but to discover that It who claims his whole affection. An analogous substitute may deceive, but when discovered never does as well. The analogy may claim affection. But the original It commands a poignancy of feeling.”
Alfred North Whitehead, Adventures of Ideas