It was night again. The University lay in silence, and it was a silence of three parts.  The most obvious part was a hollow, echoing quiet, made by things that were lacking. If there had been a wind it would have sighed through the trees, passed along the streets with a whisper, and buried the silence under a shower of snow. If there had been a crowd, even a handful of students around, they would have filled the silence with conversation and laughter, the debates and drinking one expects fr