Irregularity, poignancy and brevity

I was reading Bernard Leach’s “A Potter in Japan” and found a beautiful passage pertaining to Japanese ceramics for the Tea Ceremony: “They [utensils for the Tea Ceremony] … are made in a land of earthquakes where nothing can be built for permanence and the Tea Rooms are like charming human birds’ nests in rock gardens where nature, irregularity, poignancy and brevity hold sway.” It is said so well that I just couldn't resist quoting it here.