Ask him. Maybe for this?
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Quotation Marks for Words
Use quotation marks to indicate words used ironically, with reservations, or in some unusual way.
Example:
The great march of "progress" has left millions impoverished and hungry.
And you got Genesis 1 & 2 screwed up, too.
Perhaps, you've got a little “fusion” goin’ on in your brain, Mr. Oppenheimer.