Муся Железнодорожная, возрадоваться не получится, ибо...
There are but two subjects upon which one may discourse with a free imagination, and without the possibility of being controverted.
You may talk of your dreams; and you may tell what you heard a parrot say.
Both Morpheus and the bird are incompetent witnesses; and your listener dare not attack your recital.
П.С. Перевод - НЕ мой, вы слишком хорошо обо мне подумали.