I'm writing original articles, but it all takes a lot of work and time...

Welcome to the world of real life! That's basically the problem we all face- we either write the content ourselves or we pay others to write it for us. Trust me, you are not alone.

It would be good if I could re-publish on my website also the best articles on subject I can find on the web

So you are basically talking about finding a great article on the web, then posting it on your site?

Let's see...
1) If you do it without the owner's permission, that's called violating the owner's copyright. It's illegal- DON'T DO IT!
2) Assuming that the owner allows you to publish it on your site, why should Google 9or any other search engine) give more weight to the article on your site instead of the original site?

And other than that - if I can keep adsense there...

AdSense is NOT allowed on sites with copyright violations. You could get banned for life.

What do you think?

I think you already know the answer.

You're not a native speaker of English, are you? There's generally a difference between native-speaker mistakes and non-native-speaker mistakes.

Things that jumped up and hit me in the face:

I have vast knowledge

You personally know, or you have access to the collected knowledge? Are you yourself the world's leading authority, or do you simply know where to find the experts?

so called "authors"

I seriously doubt you meant this the way it looks. (The phrase "so called" and the quotation marks are each, separately, suspect.) Unless you're taking a jab at specific experts whose expertise you disagree with.

certain books

Again, as above. Unless there's something about the subject you're not telling us. ("Certain books-- and you know the ones I mean, heh heh.")

I'm a bit late

Think you can catch up? Here I suspect you meant "slow".

until they don't ban

Until they ban? So long as they don't ban?

How good is Google's English these days? Probably not good enough, considering how many spam sites still have to get manually cut, even when they are obviously gibberish. But even if the search engine can't always tell when something is flawlessly written, why take chances?

Then again, if you're replicating non-English content in a language google doesn't know very well, you may be home free. (It can't be a language google doesn't know at all, because those don't support AdSense.)

Lucy,

You're right, English is not my native language, but still , I can't see a flow in your quotations, as far I see they are correct!

1. Vast knowledge - Exactly, I personally know and I am leading authority in the field.
2. So called authors - you're right, almost none of those articles have written the person who is publishing it!
3. certain books - exactly, I know the ones they are using, because I have spent life in the field, and for those I may not know exactly I still doubt they personally have written the biographies of Saints from 12th century. They are taken from books and other websites.
4.I'm a bit late - might mean, oh, why I didn't do it when I started in 1998 on Geocities...
5. until they don't ban - so long as they don't ban, precisely correct. If they would start to ban, my plan would not work.

p.s. In my field of interest:
1. (Most)Original authors are dead for several hundreds and on some occasions thousands of years.
2. People publishing them on internet - on most occasions - consider most of those texts of religious importance and would be only happy for others republishing those texts;
----------------------------------------------
- as you can see - on most occasions there is no such thing as author-rights they were monks on 8th or 12th century;
- The main problem is G.