John Paul Stevens,
Mallard v. United States District Court for Southern District of Iowa…
“ The lawyer's duty to provide professional assistance to the poor is part of the ancient traditions of the bar long recognized by this Court and the courts of the several States. [4] As Justice Field, then sitting on the California Supreme Court, declared more than a century ago:" [I] t is part of the general duty of counsel to render their professional services to persons accused of crime, who are destitute of means, upon the appointment of the Court, when not inconsistent with their obligations to others; and for compensation, they must trust to the possible future ability of the parties. ”
