When in your house black crows give birth to white doves,
then will you be called wise.
Over thousands of years the transformation of matter has always been held in awe, powerful enough to allow Alchemy to thrive.
Knowledge becomes the ability to transform matter into spirit; the Alchemist is blessed with such superhuman powers so as to be able to turn lead into gold. Both as a metal and in terms of human nature lead is regarded as being chaotic and heavy. Gold is light solidified, the victory of the spirit over matter.