Answer: the question ‘Where does meaning come from?’ Maybe too big for a Friday night but listening to Rachmaninov preludes says otherwise. And:

The decisive question for a man is this: Is he related to something Infinite or not?”
– Carl JungAn attempt to make visual sense of a talk by Thomas Forget (Ass’t Prof, Architecture, UNC Charlotte) Oxford 2009. Two years on, the question’s still there.