It's not the first time my faith has been rocked, and I daresay it won't be the last (sigh)!
I came upon General Semantics via A E Van Vogt's books, the World of Null'A and the Pawns of Null'A (in the USA, this was published as the Players of Null'A). As far as I can see, Null-a (non-aristotelian) is a way of looking at the world which would greatly appeal to a Harlequin, as it widens the perception and uses logic rather than letting human emotions automatically colour our responses to the Universe.
We'd better ask JX11H!