O sleep, where art thou?

Sleep, my dear sleep, where art thou? I search for thee in the depths of my bed and in the dark of the night but do not find you. I long for thee all hours of the day with no avail. We were of such fond acquaintance but now we are strangers. Yet, you seem to find me in the unlikeliest of hours and the most inconvenient of times: during a protracted lecture or in the depths of a dreary book. Sleep, my dear sleep, I miss you so.