Hotchner v. Doubleday & Co.

An expression of an opinion may become as damaging as an assertion of fact, and liability for libel thus attach, if the writer indicates that "he has private, firsthand knowledge which substantiates the opinions he expresses ...." | An expression of an opinion may become as damaging as an assertion of fact, and liability for libel thus attach, if the writer indicates that “he has private, firsthand knowledge which substantiates the opinions he expresses .... ” | “An assertion that cannot be proved false cannot be held libellous.” | “An assertion that cannot be proved false cannot be held libelous” | "An assertion that cannot be proved false cannot be held libelous."