Aletheia means unveiled mystery, not secret, disclosed facts and intentions, how something works and how it does not work, how it does exist and how it does not exist.

"To say of what is that it is not, or of what is not that it is, is ψεῦδος, while to say of what is that it is, and of what is not that it is not, is αληθές" - Aristotle 1011b27

Martin Heidegger "To raise the question of aletheia, of disclosure as such, is not the same as raising the question of truth. For this reason, it was inadequate and misleading to call aletheia, in the sense of opening, truth."

"ἀ–λήθεια, uses the privative ἀ; letheia (λήθεια) is semantically connected to the Hadean river of forgetfulness lethe (λήθε), and of oblivion, it also underlies the Latin lateo, 'am hidden', 'remain unnoticed', from which English derives 'latent'.now the sanskrit vowel अ is related to the greek ἀ, and is also used as a privative in Sanskrit."

Are there any other (philosopher's) works about the term except that of Heidegger?

  • The contrast with pseudo is interesting. But it evokes "fake" and "true" to me, which doesn't seem to be quite like "un-mistery, un-secret and un-closed". That would be more like "open", as in the expression an "open secret".
    – Frank
    Feb 11 at 16:31
  • open facts do not give clean open intentions, that is why unclosed not same is open. Unclosed mean something without inner borders, open means you have to enter to make the rules work - not enter no work. second is like contract with devil, you follow by rules, rules are open, but game is unfair. Unclosed mean opened inside, opened outside. Do you know that concept of Paradis gates are different: some opened outside, some inside? Feb 11 at 16:48
  • Sounds like Trojan Horse. It's revealed but at the same time not what it appears to be. en.wikipedia.org/wiki/Aletheia
    – estinamir
    Feb 11 at 22:00
  • @estinamir no-no. The question: is it a horse? - the truth variant: yes, it is a horse. - aletheia: no, it is military squad inside the horse! That is a different. Feb 11 at 22:50
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    Theory and History of Ontology has a helpful survey of the studies of the use of ἀλήθεια in ancient Greek with a number of references. Heidegger's musings have more to do with his own interests than with the original meaning.
    – Conifold
    Feb 11 at 22:51

1 Answer 1


I can only think of unveiled and disclosure, the later also appearing in the Wikipedia article about Heidegger and aletheia.

With respect to philosophers, after Heidegger more have discussed it, usually calling it World disclosure:

It has been discussed (not always using the same name) by philosophers such as John Dewey, Jürgen Habermas, Nikolas Kompridis and Charles Taylor.

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    Thank you for fixing, but term disclosure needed that something was closed, but aletheia means that the world is not closed, but the mind can be closed or be in sleeping. So, truth concept became after "the contract", if someone is following the contract you call this truth, if not lie. Aletheia in this system is a state of nature, not the contract, and not something after contract. For example - Fire is hot, if the fire is not hot it is not Fire, it is pseudo-fire - picture of the fire, image, word "fire" and else, but not Fire or pure idea. And more, to understand what is Hot - touch Fire. Mar 5 at 18:03
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    @άνθρωπος You're right, the closest we can get in English is disclosed I think, although it's not as precise as aletheia, since not closed presumes that it could be closed, whereas aletheia is more in the lines of something that was hiding in plain sight, but never closed or unreachable. That's why I personally prefer unveiled because it reminds that it is the observer the one who lifts their own veil so that they can see the truth. But it seems from Wikipedia that disclosed won.
    – user64708
    Mar 5 at 18:08

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