“癞蛤蟆想吃天鹅肉”有没有相近的英语谚语？

1． aim at the moon 妄想，痴心妄想

A: I want to marry Sally, mammy.

B: Don’t aim at the moon. Sally is so excellent. It is impossible for her to marry you.

A: I am also outstanding. I have a lot of confidence.

A：妈妈，我想和萨莉结婚。

B：不要痴心妄想了，萨莉是那么优秀，要她嫁给你是不可能的。

A：我也很出色的。我充满自信。

beast and beauty 引申一下 beast want beauty

If a poor man asked to marry a princess, that would be like begging for the moon.
如果一个穷汉子想娶一位公主为妻，则无异乎懒蛤蟆想吃天鹅肉。

我不会拆

A: I want to marry Sally, mammy.
B: Don’t aim at the moon. Sally is so excellent. It is impossible for her to marry you.
A: I am also outstanding. I have a lot of confidence.

A：妈妈，我想和萨莉结婚。
B：不要痴心妄想了，萨莉是那么优秀，要她嫁给你是不可能的。
A：我也很出色的。我充满自信。

啊