500
The theme of the passage below:
One afternoon, a fox was walking through the forest. The fox saw a bunch of grapes hanging from over a branch.
Just the thing I need when I'm thirsty, the fox thought.
Taking a few steps back, the fox jumped and just missed the hanging grapes. Again, the fox took a few steps back and tried to reach the grapes but still failed.
Finally, giving up, the fox said, "They're probably sour, anyway." Then, the fox walked away.
What is "It is easy to dislike what you cannot have."