When I use this example from here, I can simply include the given figure.eps with the documentclass \documentclass[10pt]{article}
The provided *.eps file is displayed properly. As soon as I change the document class to \documentclass[11pt,a4paper,draft]{book}
(remove the \abstract section, since available in articles only) I get this screen and the picture is not displayed in my *.pdf

Why is the *.eps not displayed?
draftoption. Using this option makes the compiling to be shorter. A reason for this quicker compilation is that pictures are not displayed. Instead, a blank frame (having same dimensions) with their name is printed. – ebosi Aug 12 '16 at 20:45