The technique is mainly passed from fathers to children or from masters to apprentices strictly following ancient Buddhist painting books that provide instruction on line and figuredrawing, colour matching and pattern design.
He is also a polarizing figure, drawing opposition from Republicans across the country because of his role in writing the Dodd-Frank law and his pre-crisis support for government housing agencies Fannie Mae and Freddie Mac.
But he refused to give an estimate of the numbers of people who might move to Britain after getting the right to live and work in the UK in December, saying he did not want to start a "scare story" and that more work had to be done on drawing up a robust figure.
Speaking to the Daily Telegraph, Dr Williams also revealed that the Church was drawing up plans to appoint a presidential figure to share some of the burden of running the worldwide Anglican communion.
"There's little enthusiasm and even less conviction for potential deals as we spend hours trying to figure out how we can justify our fees, " a note accompanying a 2009 drawing says.