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By Rob Wile
May 16, 2017
Chesnot—Getty Images

Yesterday, Bill Gates gave a graduation speech — via Twitter.

And the richest man in the world has helped propel a psychology book to the penultimate spot on the Amazon best-seller list using just 140 characters.

First published in 2012, The Better Angels of Our Nature: Why Violence Has Declined, by Harvard psychologist Steven A. Pinker, argues violence has actually been decreasing in recent centuries, and attempts to explain what may be driving this phenomenon. Mark Zuckerberg previously named it as a “book of the year” pick.

As the Washington Post first noted, as of Tuesday morning, since Gates’ Tweet, the book has climbed 608,850 percent to move to No. 2 on the overall Amazon best-seller book list, just behind perennial graduation-time best-seller, Oh, The Place You’ll Go!, by Dr. Seuss.

Here’s what Gates had to say about “Angels”:

You can buy Pinker’s book at Amazon. Here’s Gates’ full Tweet-speech:

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The purpose of this disclosure is to explain how we make money without charging you for our content.

Our mission is to help people at any stage of life make smart financial decisions through research, reporting, reviews, recommendations, and tools.

Earning your trust is essential to our success, and we believe transparency is critical to creating that trust. To that end, you should know that many or all of the companies featured here are partners who advertise with us.

Our content is free because our partners pay us a referral fee if you click on links or call any of the phone numbers on our site. If you choose to interact with the content on our site, we will likely receive compensation. If you don't, we will not be compensated. Ultimately the choice is yours.

Opinions are our own and our editors and staff writers are instructed to maintain editorial integrity, but compensation along with in-depth research will determine where, how, and in what order they appear on the page.

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