Taylor is a founder and an active member of the Bogleheads investment forum. Over the years, he has read a tremendous number of investment books and is gracious enough to record down the quotable quotes from the books he read. He posts these gems to the Bogleheads forum and they are well received by the forum members.
It’s of course best to read the books themselves, but, if you do not have the time or energy to peruse the voluminous number of books, Taylor’s Investment Gems does a good job summarizing the literature. If you like the gems, you might like to buy the books from the Amazon’s links on the wiki page. It seems like buying via the wiki’s links might generate a referral fee for the Bogleheads site.