Sam Quinones, author of the book Dreamland: The True Tale of America’s Opiate Epidemic, writes for the New York Times on how walls can stop people, but do not stop drugs. SHARE Twitter Facebook Google+ Send to a Friend Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email.