1001Philosophers

Ibn al-Haytham 965 – 1040

Ibn al-Haytham (965 – 1040) was an Arab philosopher of the Medieval era, associated with Islamic Philosophy and Medieval Philosophy.

Abu Ali al-Hasan Ibn al-Haytham, known to the Latin West as Alhazen, was an Arab mathematician, astronomer, and philosopher and one of the greatest scientific minds of the medieval world. His seven-volume Book of Optics established a new theory of vision and a methodology for natural inquiry grounded in systematic experimentation, anticipating central themes of the early modern scientific revolution. He worked principally in Cairo under the Fatimid caliph al-Hakim. The book's translation into Latin shaped Roger Bacon, Witelo, and Kepler, and its method of controlled experiment remains a touchstone of scientific philosophy.

Key facts

Nationality
Arab
Era
Medieval
Movements
Islamic Philosophy, Medieval Philosophy

Selected quotes

  • Attributed to Ibn al-Haytham:

    “Truth is sought for its own sake.”

  • Attributed to Ibn al-Haytham:

    “The duty of any man who studies the writings of scientists is to be the enemy of all that he reads, attacking it from every side.”

  • Attributed to Ibn al-Haytham:

    “He who seeks truth makes himself the enemy of authority.”

  • Attributed to Ibn al-Haytham:

    “Vision occurs when light from objects enters the eye.”

  • Attributed to Ibn al-Haytham:

    “Reason and experiment together are the only ways to certain knowledge.”

Read all Ibn al-Haytham quotes

Ibn al-Haytham by topic

Frequently asked about Ibn al-Haytham

When did Ibn al-Haytham live?
Ibn al-Haytham was born in 965 and died in 1040.
Where was Ibn al-Haytham from?
Ibn al-Haytham was an Arab philosopher of the Medieval era.
What philosophical movements is Ibn al-Haytham associated with?
Ibn al-Haytham was associated with Islamic Philosophy and Medieval Philosophy.
What was Ibn al-Haytham known for?
Abu Ali al-Hasan Ibn al-Haytham, known to the Latin West as Alhazen, was an Arab mathematician, astronomer, and philosopher and one of the greatest scientific minds of the medieval world.
How many quotes are attributed to Ibn al-Haytham?
There are 10 attributed quotations from Ibn al-Haytham in the 1001Philosophers collection, organized by topic.