Charles Marchant Stevenson and Matt Leach of Stevenson/Leach Studios collaborated on "Golden Mean", a tribute to the heart of the sacred geometry which gives their work so much of its power, but also a reference to Stevenson's pun: often he referred to Leach as "the golden mensch."
Stevenson and Leach refer here to the golden ratio or golden mean; the mathematical ratio is called by other names as well, including the golden section, the divine section and the divine proportion.
Two quantities are in the golden ratio if the ratio of the sum of the quantities to the larger one equals the ratio of the larger one to the smaller.
Stevenson sometimes referred to Mathematician Luca Pacioli's influential three-volume work "De Divina Proportione" (first published in 1509), which advocates the Vitruvian system of rational proportions and was illustrated by Pacioli's friend Leonardo da Vinci. Leonardo's use of the principles of the golden ratio in his own work was an inspiration to Stevenson. In addition to "De Divina Proportione", Matt Leach remembers Stevenson's well-thumbed copy of ''Elements of Dynamic Symmetry'' by Jay Hambidge.
Hand signed on the back: Stevenson/Leach
Artist's original frame