‘OK. The word when. There was a Rinzai roshi who explained the four-letter word when. He said that when the vertical—the absolute—line and the horizontal—the relative or conventional—lines are drawn (this is the dark world and this is the light world)—when they intersect that’s when. It’s sudden.’ (from the Sonoma Mountain Zen Center newsletter)
This reminds me of the way Katagiri Roshi talks about time and the infinite.