A frequent feature on this site; feel free to comment on the quote or to supply a competing quote.
Every gun that is made, every warship launched, every rocket fired, signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. The world in arms is not spending money alone. It is spending the sweat of its laborers, the genius of its scientists, the hopes of its children. --Dwight D. Eisenhower