It's unlikely that you'd be playing the part in a movie adaptation of your book. When you get your book adapted into a movie, it's like giving up your baby for adoption. The director may find your input useful but more likely they will find it restricting. You could direct it but you'd have to...
All that is necessary for the triumph of evil is that good men do nothing.
* This is probably the most quoted statement attributed to Burke, and an extraordinary number of variants of it exist, but all without any definite original source. These very extensively used "quotations" may be...