Library of Trinity College, Dublin, Ireland
Found it on Facebook.
Libraries are the thin red line between civilization and barbarism.
Looking for the citation of where Gaiman wrote that; probably here. Gaiman is a contemporary British author of short stories and other works.
No credit line appears for the photo of the library, nor for the design of the quote on the photo.
Tip of the old scrub brush to Jean Detjen.
More:
- Neil Gaiman Reveals Why Secrets Don’t Leak Out Of The Doctor Who Office (gizmodo.com.au)
- 25 Writers on the Importance of Libraries (flavorwire.com)
- Liars & Believers Play Around With Gaiman (wbur.org)
- Neil Gaiman Writing Sandman Prequel (izabael.com)
- Re-reading The Sandman (pottedplot.wordpress.com)
Posted by Ed Darrell 
Millard Fillmore's Bathtub 