Facebook hit a huge milestone last month. On Monday, August 24, 1 billion people used the social network to connect with their friends and family.

Back in late 2012, Facebook hit another milestone, hitting 1 billion users in total. After that, a little red book started appearing on the desks of all its employees.

The book is full of inspirational, propaganda-style quotes about Facebook's history and values. Until very recently, its contents — even its existence — were largely unknown to outsiders.

Now, however, former Facebook designer Ben Barry, who created it during his time with the company, has published a series of scans from the book.

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Business Insider