Summary

Robert H. Jackson Morissette v. United States — Opinion of the Court

The Government asks us by a feat of construction radically to change the weights and balances in the scales of justice. The purpose and obvious effect of doing away with the requirement of a guilty intent is to ease the prosecution's path to conviction, to strip the defendant of such benefit as he derived at common law from innocence of evil purpose, and to circumscribe the freedom heretofore allowed juries.
Source: Wikisource

Robert H. Jackson Morissette v. United States — Opinion of the Court

If one takes property which turns out to belong to another, his innocent intent will not shield him from making restitution or indemnity, for his well-meaning may not be allowed to deprive another of his own.
Had the statute applied to conversions without qualification, it would have made crimes of all unwitting, inadvertent and unintended conversions. Knowledge, of course, is not identical with intent and may not have been the most apt words of limitation. But knowing conversion requires more than knowledge that defendant was taking the property into his possession.
Source: Wikisource

Robert H. Jackson Morissette v. United States — Opinion of the Court

A conclusive presumption which testimony could not overthrow would effectively eliminate intent as an ingredient of the offense. A presumption which would permit but not require the jury to assume intent from an isolated fact would prejudge a conclusion which the jury should reach of its own volition. A presumption which would permit the jury to make an assumption which all the evidence considered together does not logically establish would give to a proven fact an artificial and fictional effect.
Source: Wikisource

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