A kind of “symbol knitting”

Mathematics began when practical thinkers like Archimedes decided to ignore naysayers like Zeno (whose paradoxes were meant to bury mathematics, not to praise it) and deal with nonsenses like pi and the square root of 1. How do such monstrosities yield such sensible results? Because mathematics is magical. Deal with it.

Reviewing new books by Paul Lockhart and Ian Stewart for The Spectator