John wrote (as quoted by Nad):

> But my love for the beauty of pure math and theoretical physics keeps pulling me back to the things I used to think about.

At another point I remember you saying that you felt that the foundations of "green mathematics" (network category theory) were also of deep interest and beauty as mathematics, and had the advantage of significance on a more present timescale than e.g. quantum gravity. Has your perspective on this changed?

As I see it, we have to follow our thoughts where they take us, yet at the same time we can strive to shepherd and lead them in directions that we believe to be important.