Read it through once

I was not free to resume the interrupted chain of my reflections till bedtime: even then a teacher who occupied the same room with me kept me from the subject to which I longed to recur, by a prolonged effusion of small talk. How I wished sleep would silence her. It seemed as if, could I but go back to the idea which had last entered my mind as I stood at the window, some inventive suggestion would rise for my relief.