What is the theme in A Dangerous Fortune by Ken Follett?

Ambition is also a theme throughout the book. Micky is very ambitious and does whatever he has to do obtain what he wants. When someone gets in his way and presents a threat, he kills them, as he did Peter Middleton, Seth, Solly and Tonio. All of the murders have to do with Cordova. Micky is stealing in school to keep himself from having to return to Cordova and kills Peter to silence him. Seth and his values stand in the way of the financing for the rifles so Micky kills him so there will be a new senior partner. Solly knows of their involvement in keeping his father from being awarded a peerage and is going to cancel the support of the Greenbourne bank in the bonds for the railroad in Cordova, so Micky kills Solly. Tonio returns as a representative of President Garcia and endangers Micky's dream of becoming President of Cordova, so he kills Tonio. Micky kills anyone who stands in the way of his ambitions.