Dodo by E.F. Benson — Read

Dodo slept long and dreamlessly that night; the deep, dreamless sleep which an evenly-balanced fatigue of body and mind so often produces, though we get into bed feeling that our brain is too deep in some tangle of unsolved thought to be able to extricate itself, and fall into the dim immensity of sleep. The waking from such a sleep is not so pleasant. The first moment of conscious thought sometimes throws the whole burden again on to our brain with a sudden start of pain that is almost physical. There is no transition. We were asleep and we are awake, and we find that sleep has brought us only a doubtful gift, for with our renewed strength of body has come the capability of keener suffering. When we are tired, mental distress is only a dull ache, but in the hard, convincing morning it strikes a deadlier and deeper pain. But sometimes Nature is more merciful.

She opens the sluices of our brain quietly, and, though the water still rushes in turbidly and roughly, yet the fact that our brain fills by degrees makes us more able to bear the full weight, than when it comes suddenly with a wrenching and, perhaps, a rending of our mental machinery.