Today, it is on 14 May 2024.

Quotes about epistemology :

  • « The criterion that defines science, this is not the credibility of scientific knowledge, but the falsifiability of this knowledge. »
  • « A scientific theory is a coherent group of refutable assertions that describes and explains a phenomenon observable, quantifiable and reproducible. »


Karl Popper (1902-1994), one of the most influential philosophers of sciences in twentieth century, he invents falsifiability as a criterion of demarcation between science and pseudoscience.
« A theory which is not refutable by any conceivable event is non‑scientific. » Karl Popper
« Whatever knowledge is attainable, must be attained by scientific methods ; and what science cannot discover, mankind cannot know. » Bertrand Russell