"God created suffering so that joy might appear through its opposites. ... Things become manifest through opposites. Since God has no opposite, He remains hidden."Words of Rumi* in Elif Shafak's "The Forty Rules of Love". (Penguin Books 2015 ed., p121)
* Jalāl ad-Dīn Muhammad Rūmī was a 13th century "poet, jurist, Islamic scholar, theologian, and Sufi mystic" (from Wikipedia, version as of 16:38, 12 October 2015). I've no idea whether these really are his words of the words of Shafak.
b) A colour chart showing how Crayola have expanded the range of colours in their crayons since they started with eight in 1903.
From Somewhere Over The Crayon-Bow.