1001Philosophers

John Pecham Quotes

John Pecham was an English Franciscan friar, scholastic theologian, and natural philosopher, and from 1279 archbishop of Canterbury. After studies at Paris and Oxford and a long teaching career as a Franciscan master, he produced his influential Perspectiva Communis, a textbook of geometrical optics that synthesized the work of Alhazen, Roger Bacon, and earlier Western writers and remained a standard introduction to the science of vision into the seventeenth century. The quotes below are attributed to John Pecham, organized by topic.

John Pecham on God

  • Attributed to John Pecham:

    “Theology must remain faithful to the wisdom of Augustine.”

  • Attributed to John Pecham:

    “Franciscan poverty is a witness to the freedom of the Christian.”

John Pecham on Nature

  • Attributed to John Pecham:

    “Light is the common bond between the eye and the world.”

  • Attributed to John Pecham:

    “Optics shows that the visible world is shaped by mathematical law.”

John Pecham on Truth

  • Attributed to John Pecham:

    “Truth is one, but the paths to it are many.”