"I am fully perswaded that our countrie is not inferiour to any for men of rare knowledge, singular explication, and exquisite execution of the artes mathematicke, for what strangers may be compared with M. Thomas Digges, Esquire, our countryman, the great master of archmastrie? and for theoretical speculations and most cunning calculation, M. Dee and M. Thomas Heriotts are hardly to be matched."—The Seaman's Secrets, by John Davis, 1594.