[In A Grief Observed C.S. Lewis used an initial to refer to his wife: H.]

It's not true that I'm always thinking of H. Work and conversation make that impossible. But the times when I'm not are perhaps my worst. For then, though I have forgotten the reason, there is spread over everything a vague sense of wrongness, of something amiss. . . . So with this. I see the rowan berries reddening and don't know for a moment why they, of all things, should be depressing. I hear a clock strike and some quality it always had before has gone out of the sound. What's wrong with the world to make it so flat, shabby, worn-out looking? Then I remember.
-- C.S. Lewis, A Grief Observed