Lyndon Johnson actually said...
But most of all, I am proud of you men who, out of the pitiful earnings that you get, and the modicum pay that is in your envelope, still think enough of your country not only to give your life for it but to invest some of your dollars in it.
Context
Remarks Upon Presenting the U.S. Savings Bond Minuteman Award to the Tactical Air Command's 12th Air Force
01/10/1968