Steven Pressfield said this quote
“ Here is what you do, friends. Forget country. Forget king. Forget wife and children and freedom. Forget every concept, however noble, that you imagine you fight for here today. Act for this alone: for the man who stands at your shoulder. He is everything, and everything is contained within him. That is all I know. That is all I can tell you.--Dienekes at Thermopylae ”