I think at this point in the discussion we are getting to a very interesting question: about the meaning of the word "wisdom". To my eye, Devereaux is using the word in a way that sounds a lot like how it is conceptualized in Ackoff's Data/Information/Knowledge/Insight/Wisdom model (sometimes instead of "insight" people use "understanding" as the penultimate level). Its Wikipedia page is a little bit rambling (which is actually quite fitting given how many different ways it's been formalized), but is a good place to start: https://en.wikipedia.org/wiki/DIKW_pyramid

"Wisdom" is probably the hardest part of the framework to define clearly, but across formulations it's about being able to integrate different kinds of knowledge from difference sources, and then using that to be able to know when and why to take a certain action, or to know what the right thing to do might be. Obviously this is something that is frequently informed by knowledge derived from science and scientific reasoning, but usually also relies on some of the ways of thinking and understanding that the humanities can help provide. So that's how I'd understand what Devereaux was saying (allowing for some rhetorical flourish on his part)- it's a "both-and" kind of situation rather than an "either-or"; in other words, science and humanities on their own are both necessary and insufficient.

And of course for a humorous take on the matter, SMBC is always a reliable source: https://www.smbc-comics.com/comic/2009-10-18