The allegation of some authority or case, or passage of some law, in support of a position which it is desired to establish.
Quotations when properly made, assist the reader, but when misplaced, they are inconvenient. The transcript of a part of a book or writing from a book or paper into another.
If the quotation is fair, aud not so extensive as to extract the whole value or the most valuable part of an author, it will not be a violation of the copyright. It is mostly difficult to define what is a fair quotation. When the quotation is unfair, an injunction will lie to restrain the publication.
"That part of a work of one author found in another," observed Lord Ellenborough, "is not of itself piracy, or sufficient to support an action; a man may adopt part of the work of another; he may so make use of another's labors for the promotion of science, and the benefit of the public."