 He wrote "The Carde and Compasse of Life" in 1613, a manual of advice to the prince.A later work, "The Heavenly Progresse" (1617) contained further advice to Charles that a good prince was not above the law, using quotations from classical authors to justify his reasoning.His other works included "The Key of David" (1619) and "Goodness the Blessed Man's Badge (1619).