` :::The statement that the names 'top' and 'bottom' were chosen to be logical partners to 'up' and 'down' is not that controversial you can find any number of reference saying something along those lines (and we have a perfectly good one to boot). Any subjectivity of this logic lies with whoever made that choice (and nobody seems to know who that was, best I know Harari) in the first place. By presenting the statement as a quote your weaseling out of the responsibility of the statement. The fact that Perkins said that this is logical is nonnotable non-fact, this is completely irrelevant to this article, other than as a reliable source for the statement. So, if we are not going to make that statement there is also no point in presenting the quote. :::Even if you want to weasel out of making the statement by putting it in quotes, it is still unnecessary to mention Perkins. It is clear that it is a quote from the ref standing right next to it. (to make this more clear you could put the ref before the period indicating it is sourcing the quote itself. Mentioning ``Perkins (2000)`` is a form of Harvard citation, while the rest of the article uses footnotes. (  )`