El Lissitzky's About 2 Squares is a story about how two squares, one red, one black, transform a world. The commentary, More About 2 Squares, boxed in the same slipcase, provides a detailed analysis of this seminal work.

El Lissitzky's first suprematist book is a story of how two squares, one red, one black, transform a world. It is Lissitzky's 'scientific romance', an allegory of the fourth dimension and its effect on the three-dimensional world.

Since 2013, mathematicians from around the world have made dramatic progress on a problem in number theory that goes back centuries, the Twin Primes Conjecture, which asserts that there are infinitely many pairs of prime numbers that differ by 2 (for example, 17 and 19 is such a pair). This book describes two stories: that of the recent work on the Twin Primes Conjecture, and in parallel the related ideas around primes from the previous two thousand years ofmathematics.