" It is a type of science originally advocated 2,400 years ago by the Father of Medicine, Hippocrates, who said, “There are, in effect, two things: to know and to believe one knows. To know is science. To believe one knows is ignorance. "

― T. Colin Campbell , The China Study: The Most Comprehensive Study of Nutrition Ever Conducted and the Startling Implications for Diet, Weight Loss, and Long-term Health