One of my favorite all time books.
Fermat’s Enigma by Simon Signh
Free PDF avail on line
A surprisingly easy read and description on the evolution of math.
And the solving of A cubed + B cubed = C cubed (no numbers exist to solve this ratio)
The book leaves you with the sense that math is art
Like it!
Others to try for ‘expanding the conceptual mind’:
“Flatland” by Edwin Abbott (1884)
Michu Kaku’s “Parallel Worlds” and “Hyperspace”