QUOTE : Only a simple black pencil will do for making a notation of a benchmark. Ink will run, be dissolved by the tree sap, be washed away by rain, dew, fog, and snow. Nothing as artificial as ink will do for recording eternity and immortality. Graphite is carbon that has been subjected to enormous pressure for millions of years and that might have become coal or diamonds. Instead, however, it has been transformed into something more precious than a diamond; it has become a pencil that can record all that it has seen… A pencil is a greater miracle than a diamond, although the chemical make-up of graphite and diamond is identical.