Although we belong to a species which spends an alarming amount of its time blowing things up, every now and then we are moved to add gargoyles or garlands, stars or wreaths, to our buildings for no practical reason whatever. In the finest of these flourishes, we can read signs of goodness in a material register, a form of frozen benevolence. We see in them evidence of those sides of human nature which enable us to thrive rather than simply survive.
