Worry had never been the cause of his laughter lines, the kindly crow's feet, except that moment; the time we all realised. Being old had other symptoms than grumpiness, and white hair.
So, like watching a monument crumble, we saw the old man shudder and shake. Then with mouths agape, we knew he had other flaws, our Old Wise Owl, and so it turns out, our Grandfather, placed on the pedestal tall, was, in fact, afraid of heights.