Mahlon Pitney, Donnelly v. United States — Opinion of the Court
“ The danger of admitting hearsay evidence is sufficient to admonish courts of justice against lightly yielding to the introduction of fresh exceptions to an old and well-established rule, the value of which is felt and acknowledged by all. If the circumstance that the eyewitnesses of any fact be dead should justify the introduction of testimony to establish that fact from hearsay, no man could feel safe in any property, a claim to which might be supported by proof so easily obtained. ”
