Symmetrical composition

"They [lives] are composed like music. Guided by his sense of beauty, an individual transforms a fortuitous occurence (Beethoven's music, death under a train) into a motif, which then assumes a permanent place in the composition of the individual's life...Without realizing it, the individual composes his life according to the laws of beauty even in the times of great distress."

- The Unbearable Lightness of Being, "Soul and Body"

Before I forget where these lines are, I'll post them.