“Baarn, 5 July 1964: ‘On the train to Utrecht I was suddenly overwhelmed and enormously moved by a sky full of clouds at different levels. I experienced a sense of space and three-dimensionality such as I’d not experienced for a long time. It’s possible to suddenly become aware of these things, even in an overpopulated country like Holland. Provided that you are looking up, you’ll suddenly see that timeless and unbounded eternity. Do you think it silly, or can you imagine what I mean?”
