Children and animals are extremely careful about doing exactly what they are doing at an given moment. I have never seen an adult who doze as skillfully as my cat. Nor do I know a man or woman my age who can swing with the same devotion as my son. Nothing distracts him. When he swings, when he sleeps, he sleeps. And when he wakes, he knows that it can all being. For, having had the luxury of rest, he can proceed again to the luxury of time, where clocks are merely flat ticking surfaces and the job at hand is the only one that matters.