In an artistic piece of sublime joy, you can sometimes discern a hint of pain. Take J.S. Bach's Air on the G string for example. The music is sweet, and yet in the midst of its rapturous melody you can certainly sense a taint of pain approaching from the midair.
Sanshiro is one of Soseki Natsume's early masterpieces. Sanshiro, a country boy, goes to Tokyo to enter the University. There he meets Mineko, a girl of beautiful enigma. Sanshiro finds that he can decipher the pain in the heart of Mineko's voluptuous existence. The pain in a sense foretells the eventual catastrophe of the love affair, but also is an essential accompaniment to anything of blissful beauty.