The fable is full of symbols and a warning to us
I think the wife is a very disagreeable person. Of course, her first reaction is in some kind understandable, because it is no every-day situation that someone tells you there is a unicorn in your garden. But I think she could have trusted her husband after his second assurance, because she knows him very well and should be able to trust him blindly. And if she is not able to do this she should at least not call him a “booby”. In my opinion, this behaviour is also forgivable. What is no longer forgivable is the fact that she seems to be so eager to get rid of her husband and that she calls the police and the psychiatrist. But the man is also strange. His role seems to be clear through the whole story. He saw the unicorn and his wife does not believe him. He even tries to talk to the unicorn. So he seems to be simple-minded in some kind. All the more his behaviour at the end of the fable is surprising. He refuses to admit having ever told his wife about a unicorn in their garden. I think it is really difficult to define for what kind of people the man stands in this fable because he is not so stereotypical. His wife is much easier to put into a category. She is selfish and not trustworthy. I think she stands for the mass of people in our world who are only anxious for their own success and who forgot about sympathy and consideration.