The Unbearable Lightness of Being
How we cite our quotes:
If Karenin had been a person instead of a dog, he would surely have long since said to Tereza, "Look, I'm sick and tired of carrying that roll in my mouth every day. Can't you come up with something different?" And therein lies the whole of man's plight. Human time does not turn in a circle; it runs ahead in a straight line. That is why man cannot be happy: happiness is the longing for repetition. (7.4.13)
Given this definition, are any of the characters in Unbearable Lightness capable of being happy?