Opinion of the Court
case is a fair use the factors to be considered shall include—
“(1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes;
“(2) the nature of the copyrighted work;
“(3) the amount and substantiality of the portion used in relation to the Copyrighted work as a whole; and
“(4) the effect of the use upon the potential market for or value of the copyrighted work.
“The fact that a work is unpublished shall not itself bar a finding of fair use if such finding is made upon consideration of all the above factors.” 17 U. S. C. § 107 (1988 ed. and Supp. IV).
Congress meant § 107 “to restate the present judicial doctrine of fair use, not to change, narrow, or enlarge it in any way” and intended that courts continue the common-law tradition of fair use adjudication. H. R. Rep. No. 94-1476, p. 66 (1976) (hereinafter House Report); S. Rep. No. 94-473, p. 62 (1975) (hereinafter Senate Report). The fair use doctrine thus “permits [and requires] courts to avoid rigid application of the copyright statute when, on occasion, it would stifle the very creativity which that law is designed to foster.” Stewart v. Abend, 495 U. S. 207, 236 (1990) (internal quotation marks and citation omitted).
The task is not to be simplified with bright-line rules, for the statute, like the doctrine it recognizes, calls for case-by-case analysis. Harper & Row, 471 U. S., at 560; Sony, 464 U. S., at 448, and n. 31; House Report, pp. 65–66; Senate Report, p. 62. The text employs the terms “including” and “such as” in the preamble paragraph to indicate the “illustrative and not limitative” function of the examples given, § 101; see Harper & Row, supra, at 561, which thus provide only general guidance about the sorts of copying that courts and
