On Outlines of Pyrrhonism , Book 1, from around 200 CE. Are our beliefs warranted? Skeptics following in the footsteps of Pyrrho (who lived just after Aristotle, around 300 BCE, but didn't leave us any writings, so Sextus, centuries later, has to fill us in) thought that for any argument someone puts forward (at least about the nature of reality), you can come up with a  Continue Reading …