I think first off, you got to split what people call literature from or fine literature or something like this from like commercial literature.

首先，我认为人们所称文学或纯文学与商业文学区分开来。

Do Main Street and The Grapes of Wrath belong in the category of belles-lettres or are both of them sociological studies, the one concentrating on urban experiences, the other on agrarian life?

《大街》和《愤怒葡萄》到底属于纯文学畴，还是都属于社会学研究，一个关注城市经验，一个关注农村生活？

Our critical judgment in the case of expository books concerns their truth, whereas in criticizing belles-lettres, as the word itself suggests, we consider chiefly their beauty.

我们对说明性书籍性断关注是它们真实性，而在评纯文学时，正如这个词本身所暗示那样，我们主考虑它们美感。