社会是由两大阶级构成的：拥有食物多于食欲者与拥有食欲多于食物者。
Society is composed of two great classes: those who have more dinners than appetite, and those who have more appetite than dinners.
我只想让它成为构成此书基础的一部分而已，实际上这本书还涉及到各种主题，例如历史、阶级、文化等等。
I want it to be part of the foundation of the books, which are actually about all sorts of other things as well - history, class, culture.
中产阶级的构成是相对主观的，没有那么容易界定。
What constitutes the middle class is relative, subjective and not easily defined.
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