'Logos' is the Greek, the word, or thought, or idea or reason.

Thus logic is the laws of thought - how it works; or of words.

Logic is an invention of schoolteachers, not of philosophers. — Xtrix

As if there is a clear demarcation. Philosophers do not teach and teachers do not philosophise.

Nonsense! When does it begin? at the beginning of the sentence. Talk nonsense - I do it quite often, and mean to communicate thereby. Analogy is nonsense because it is ana-logical.

'Logos' is the Greek, the word, or thought, or idea or reason. — unenlightened

That's one translation, the common one. There is that meaning in ancient Greece, as well. But in Homer, Heraclitus, and others, the word logos is more akin to "collect," or "gather."

Thus logic is the laws of thought - how it works; or of words. — unenlightened

What does the "thus" have to do with? This implies that this sentence follows from the first -- which it doesn't, because you haven't explained anything.

"Logic" is an abbreviation of επιστεμε λογικε, as the "science of logos" -- logos here meaning "assertion." This sense of logos as "assertion" has an interesting story as well.

As if there is a clear demarcation. Philosophers do not teach and teachers do not philosophise. — unenlightened

Of course they do. What's the point?

Logic is an invention of schoolteachers, not of philosophers. — Xtrix

So much the better for logic, then.

Maybe.

Does anyone have time to help me solve a proof?? I'm desperate!

Message me.