This had some good stuff in it, but I'm not sure who the intended target audience was. It suffered from deep-and-wide syndrome, where it's too broad for a specialist and too deep for an introduction.
A couple of mathematicians writing a brief essay on 'What is Mathematics?' We are promised a look into the role of logic, the use of infinity, and a look at how it is applied to describing the physical world. Sounds all right. But. NO! We get very little of the above. In fact the authors explicitly refuse to define/describe what mathematics is under the glib assertion that any such definition is too limiting. Instead we are treated to a scattered and superficial treatment of a range of mini-topics they find interesting. And some of them are. But that's not the point. And I will kick (figuratively speaking only of course ) the next person who brings up the tired old repetition of Eugene Wigner's "the unreasonable effectiveness of mathematics". Which is just so stupid. If mathematics is the generalization, abstraction and idealization of our innate notions of classification and ordering et al evolved in brains fighting to adapt to the world then how could it possibly FAIL to be effective. Or putting it a completely (?) different way if mathematics is the abstract science of possible forms/patterns/structures and the physical world is an instantiation of some of the these structures then once again how could mathematics fail to be effective. I think people who repeat this tired old trope are just impressed by the unexpected efficacy of arcane notations. But that is to miss the real point. Anyway as a quick and scattered survey of some elementary and interesting mathematical results this book is OK. As anything else it isn't.
This book suffers from the problem that many technical books face: they seek to make it readable, so they don't go into detail (perhaps exemplified by a rather pitiful non-attempt at handwaving Godel's incompleteness theorem in a couple pages); but simultaneously they get too into the weeds of the topics they are most familiar. Nonetheless, there is a rather fascinating history of mathematics and a wide sweep of concepts covered that one does walk away from this rather disjointed read with some additional insight into this great field.