Dalai Lama, Anne Benson, Fabien Ouaki (2016). “Imagine All the People: A Conversation with the Dalai Lama on Money, Politics, and Life As It Could Be”, p.120, Simon and Schuster
Adam Clarke, Mrs. Richard Smith (1833). “An Account of the Infancy, Religious, and Literary Life of Adam Clarke ...: Written by One who was Intimately Acquainted with Him from His Boyhood to the Sixtieth Year of His Age”, p.18
"'Whether we are arguing about MPs' expenses or assisted suicide, we need to engage with the moral ideals underlying our political debates'". Interview with Oliver Burkeman, www.theguardian.com. October 31, 2009.