Hello Joseph, In your example A is better, because of the usage of " Science and Civilization" ,if it were "books" for example it would be adequate to use both: " He devoted his entire life to writing books" or " to the writing of books". Alright then. In this case: B is correct ,however it is better to hint to the fact that "Science and Civilization" is a book; like putting it in brackets or referring to it as " his book" - He devoted his entire life to writing his book "Science and Civilization in China". - He devoted his entire life to writing "Science and Civilization in China". I think Jura also didn't know that it is a title of a book ,that is why she used "about".

B. He devoted his entire life to writing about Science and Civilization in China.