The First Scientist’s Guide to Truth: Alhazen on Critical Thinking

Born into a world with no clocks, telescopes, microscopes, or democracy, Ḥasan Ibn al-Haytham (c. 965–c. 1040), known in the West as Alhazen, began his life studying religion, but grew quickly disenchanted by its unquestioned dogmas and the way it turned people on each other with the self-righteous fist of zealous subjectivity. Instead, he devoted himself to the search for objective truth, pure and impartial, taken from the open hand of Mother Nature — the study of reality raw and rapturous, unm...