From the book blurb:

"Every human being has creative abilities that often remain undiscovered. Inspired by alphanumeric characters, symbols and geometric elements, Willi Kunz has, over several years and in regular short sessions, documented his creative thoughts in his sketchbooks. The symmetrical dimensions of a square are always the defining frame in which he produces three aesthetically connected line drawings. With its manifold black and white illustrations, this book is a source of inspiration—not only for designers."