The most famous one even made it (with a few changes) into the movie:

I heard Michael Ironside when Mr. DuBois was speaking.

"A soldier accepts personal responsibility for the safety of the body politic of which he is a member, defending it, if need be, with his life. The civilian does not."

"The exact words of the book," he said scornfully.

"Bud do you understand it? Do you believe it?"

I guess that's as far as Verhoeven read.