Filler content from Google Books

Hello,

I need some relevant filler content to build a silo/theme and thought to create some articles by scraping various chapters from books already published in Google Books. I intend to choose only pieces that pass the Copyscape (not posted somewhere else, except Google Books) and slightly optimise them according to the keywords I target.

So, I don't want to use them to rank, but only to support a pillar article (which is unique, relevant, etc.) with internal links.

I know the copyright…

Filler content from Google Books