We may always depend on it that algebra, which cannot be translated into good English and sound common sense, is bad algebra.

We may always depend on it that algebra, which cannot be translated into good English and sound common sense, is bad algebra.

我们可能总是相信，代数是不好的代数，它不能被翻译成好的英语和健全的常识。

-- William Kingdon Clifford 威廉·金顿·克利福德