It was thirteen years ago, mid-May 2010, and I spent most of the month in Vancouver, doing research at the UBC library, staying at the residence on the UBC campus, visiting with CZ's family and hanging out with CZ. Here is the old apple tree in our backyard in Montreal; whatever there was of a garden can't be seen here, it was on the periphery of the garden but it was there, and spring had arrived in Montreal. It was 16 May 2010.