David Josiah Brewer,
Hawker v. New York — Opinion of the Court
“ The conviction is, as between the state and the defendant, an adjudication of the fact. So, if the legislature enacts that one who has been convicted of crime shall no longer engage in the practice of medicine, it is simply applying the doctrine of res judicata, and invoking the conclusive adjudication of the fact that the man has violated the criminal law, and is presumptively, therefore, a man of such bad character as to render it unsafe to trust the lives and health of citizens to his care. ”
