The Liar Paradox
"This sentence is false." Decide whether you are looking at something true or something false, and see how far you get.
c. 600 BCE (the Epimenides line); c. 350 BCE (Eubulides' paradox)26 min read
Megarian school (4th century BCE)
Eubulides of Miletus
Megarian logician, a contemporary and critic of Aristotle. Diogenes Laertius credits him with a famous group of puzzles including the Liar, the Sorites (the heap), the Hooded Man and the Horned Man. He is the earliest person to whom the Liar paradox is attributed by any surviving source.
2 entries
The Sorites Paradox
One grain of sand is not a heap. Adding a single grain never turns a non-heap into a heap. So heaps do not exist.
c. 350 BCE20 min read