What is the theme for the fox and the grapes?

The theme of "The Fox and the Grapes" centers around the concept of rationalization and the idea of "sour grapes." In the fable, the fox, unable to reach the grapes, dismisses them as undesirable, illustrating how people often downplay what they cannot attain. This reflects human tendencies to cope with disappointment by belittling what is out of reach. Ultimately, it serves as a moral lesson about envy and the justification of failure.