Sentence:  It has been said that— when I made the observation, that if they were not married they ought to be—I endeavoured to stab their reputation. Now, I'll prove that I endeavoured to do nothing of the sort. [...] I'll prove it by logic, and I defy all the mathematicians in the habitable globe to known it down. I'll prove it by the regular mathematical construction of the English language, and will any man tell me there's any <WSD>constructed language</WSD> in the universe more mathematically regular than that? 
Meaning of the word marked with <WSD> tags:  Any language used by people, as opposed to less civilized means of communication, such as the socialization between animals.