Question: I want to set up a new website where I'm planing to post content from different mystics/spiritual authors(most of them dead). The content is from various sources but most of them from books that I bought from amazon. The important thing is that I'll be posting only particular parts of books (grabbing parts ranging 1-5 pages) per topic. *I wouldn't like to post a reference to the book*. Is this legal? 
I'm wandering because most of these authors which I plan to post died before the age of the internet.

Thanks

Answer: 
Normally in this day and age the publishers of books are the ones with the copyright holders and not the author. It might of been different back then so its worth checking. 

My person opinion is most publishers will not mind as long as your not CITING the entire book and in some way promoting their book but this doesn't make it legal. 

**Staying on the right side of Copyright Law**

If you want to stay on the right side of the law then the correct way of proceeding is simply message the copyright holders and seek permission to use snippets on your site. I imagine you would have some postive effect with this as books are completely different than video and the greed in the movie industry is far greater than that in the Book industry.
Short answer: that's illegal.

Long answer: that's illegal, but how likely do you think it is the copyright holders (not necessarily the authors) will pursue you for copyright infringement?

The tricky bit is if/when you decide to stick ads on your site. Are you making money off their copyrighted intellectual property without any kind of licence in place to compensate them? Is your site a purely hobbyist site with no ads and consistently loss-making? That can sometimes sway a decision.

I would err on the side of caution. It's a civil offence in most places, but it's still a serious one which can carry significantly punitive statutory penalties.

NB: not every country has fair use or commentary laws (UK being a good example), so blogger emptor on all of those. I think the best thing you could do if you are going to include lots of copypasta from published books is at the very least liberally link through to their pages on Amazon etc, with lots of suggestions to buy them.

For me, the tipping point between acceptable and unacceptable when verbatim quoting another source is when you get to about 200 words, but that's purely subjective.