Sasha, now five, and Ivo, two, spend a lot of time on the trampoline. I injure my ankle trying to avoid the strokes of a plastic sword. I persuade the boys to plant some oaks, and they watch me ramming fence posts into the ground and stringing them with barbed wire. Sasha writes a long story about a red car. I plant an irregular sequence of yews, which the deer eat. I read about the Japanese concept of wabi-sabi, and The Tale of Genji, which makes me think about those Japanese councillors who retire from the court, to make gardens and prepare tea.