The art of quotation requires more delicacy in the practice than those conceive who can see nothing more in a quotation than an extract. Whenever the mind of a writer is saturated with the full inspiration of a great author, a quotation gives completeness to the whole; it seals his feelings with undisputed authority.
Isaac D'IsraeliAll this is labour which never meets the eye.... But too open and generous a revelation of the chapter and the page of the original quoted, has often proved detrimental to the legitimate honours of the quoter. They are unfairly appropriated by the next comer; the quoter is never quoted, but the authority he has afforded is produced by his successor with the air of an original research.
Isaac D'IsraeliThe ancients, who in these matters were not perhaps such blockheads as some may conceive, considered poetical quotation as one of the requisite ornaments of oratory.
Isaac D'Israeli