"when has zazen ever had anything to do with sitting on a cushion?"
Well, of course -- when sitting on a cushion. Here, I sit on a swing in the backyard, or inside on a couch during the winter storms. I don't call it zazen. Maybe it's not. Who cares? When I sit, the whole universe is sitting. When I stand, guess who stands up? If anybody knew who was really doing what, they wouldn't be able to place a name for it. Nope, they wouldn't need to say a word at all. Otherwise, call it what you will, it's probably vanity regardless. What I like about Toni is, you won't find much if any vanity there. That's what's rare"
Genkaku, letter section