The Book of Tea by Kakuzo Okakura is a short collection of essays on the topic of tea and its place in Japanese culture. There are seven chapters dedicated to different subjects, like buddhism, tea hut, flower arrangements, art, and tea masters. One could read them all in a day, but I read one chapter at a time, so it took me a pleasant week to finish the book.
Although Okakura touches on history of tea (snubbing the West and the Chinese in the process), he writes mostly about philosophy behind tea ceremony, which I liked. The author happened to be a good company, and I would gladly read his other essays.
Recommended if you ate interested in Japan, its religion, philosophy, and tea, of course.