If you compare what words he uses to other users around here to the words that are used by other members around here, and on reddit on r/bitcoin you will eventually figure out who he is. (note: you will have to analyze more than just vocabulary, but also words used before and after words, and analyze this on a large scale).
QS always implies that he knows more than he's posting, but never quite gets around to filling in the blanks that he draws all of our attention to.
If you think Nullius is an alt account, just come right out and say who you think it is.
My attention span is severely impaired, and I will confess that I've mainly skimmed Nullius's posts, but from what I've read I have to say the dude knows how to write. He certainly deserves the merits he's earned