The Greek word for "return" is nostos. Algos means "suffering." So nostalgia is the suffering caused by an unappeased yearning to return.
Milan KunderaDo you realize that people don't know how to read Kafka simply because they want to decipher him? Instead of letting themselves be carried away by his unequaled imagination, they look for allegories - and come up with nothing but clichรฉs: life is absurd (or it is not absurd), God is beyond reach (or within reach), etc. You can understand nothing about art, particularly modern art, if you do not understand that imagination is a value in itself.
Milan Kundera