All in all, I'd say this is worth reading, although with some reservations. I can't complain too much, since I found it in the trash. It does a pretty great job introducing historical figures. Also, there are plenty of neat puzzles and proofs, if you can follow them.

Here are my nitpicks:

It definitely feels a bit dated, for one thing.

The authors suffer terribly from the curse of knowledge; they obviously have no idea what is meant by "general reader".

It is far too polemical. The authors get less and less objective as it goes on, vis a vis Platonism vs Formalism, as well as religion.

Ultimately, I recommend flipping through and only reading what interests you. It is quite fortunately written so as to make that possible.