Earlier quoted context omitted.
You're taking his brief argument far too literally. Of course there was more at play than honour alone. However reasons aside, I'd argue your comment is moot as there's never a good reason to start a war. Edit: wow I'm surprised by the downvotes. Are you (who ever you are) suggesting you do agree with starting wars? I'd be very interested to hear why you disagree with me.
I didn't downvote you but personally I feel conflict can be justified - stopping the Holocaust and defeating the nation that committed genocide and atrocities such as the Rape of Nanking were enough justification without considering the invasion of a huge number of sovereign territories. It disgusts me that the world has sat by during recent genocides.
I should add that I'm against starting wars but not against retaliating, even ending the war, if and when required.