Constitutions written in the 20th century, however for instance, the one written by Americans for Japan after the second world war show that it is now taken for granted that the state has a duty to ensure that all its children receive an education.

ECONOMIST: Millennium issue: EDUCATION

The intertwining plots and narrative elements of the original novel, including extracts from a book written by one of the characters and a second story about pirates within the story, meant deciding what to include and exclude would be a complicated exercise.

CNN: Filming the unfilmable: Zack Snyder on 'Watchmen'

One one hand, Germany's constitution, written after the second world war to prevent any repeat of Nazi horrors, assures the rights of parents and of religious freedom.

ECONOMIST: Circumcision in Germany