Grateful acknowledgment is made to the following for permission to reprint photographs:
2.1: Photo by Donald Glaser, used by permission of the Lawrence Berkeley National Laboratory
2.2: Photo by Donald Glaser, used by permission of Lynn Glaser
2.3: © Pierre Terre; photo used under Creative Commons License 2.0. Source: http://www.geograph.org.uk/photo/949593
3.1: © 2011 Jane Hirshfield
4.1: Kyoto file photo from Wikimedia; photo used under Creative Commons License 2.5. Source: http://en.wikipedia.org/wiki/File:Kyoto-Ryoan-Ji_MG_4512.jpg
5.1: Photo used under Creative Commons License 2.0. Source: http://ja.wikipedia.org/wiki/%E3%82%B5%E3%82%A4%E3%82%B3%E3%83%AD
7.1: Photo used under Creative Commons License, 3.0. Source: http://en.wikipedia.org/wiki/File:Times_Square_112808%282%29.jpg
8.1: Photo by Derek Key, photo used under Creative Commons License 2.0. Source: https://www.flickr.com/photos/derekskey/5249593792/in/set-72157625570278728
8.2: Photo used courtesy of the Library of Congress
10.1: Painting by Adriaen Coorte, 1697; photo from Wikimedia, used under Creative Commons License 2.0. Source: http://commons.wikimedia.org/wiki/File:Adriaen_Coorte_-_Still_Life_with_Asparagus.jpg
