结语
效率违约理论在当今具有非常强的诱惑力和吸引力。然我们只要稍微进行细化分析，就能发现该理论的错误所在，总体来看包括三点：效率违约不道德、效率违约不效率、效率违约未被承认。这预示着该理论不能作为一般命题在立法和司法中登堂入室并占据主导地位。在我国近期的司法实践中，一些法官也试图运用效率违约理论进行司法裁判。尽管效率违约可以事实上存在，但作为法律的价值判断，笔者认为该理论应当坚决予以批判。Joseph Perillo的告诫是有意义的，他认为：“效率违约理论不会也不应当在法律制度中成为规范决定的基础。”{15}(P1106)
【作者简介】
孙良国，单位为吉林大学。单平基，单位为吉林大学。
【注释】效率违约理论与效率违约不同，效率违约理论是对效率违约的立场和态度问题，而后者只是一种违约类型。效率违约理论意味着理想中的法律应当支持效率违约，赋予违约人效率违约权，法律既不能给予否定性评价，也不能施加惩罚性赔偿。
841 F.2d750.
需要说明的是，此种情况下就建筑商所应支付的赔偿可能不是房屋主人的所受损害，而是建筑商所节省的成本（即所获利益的一种形式）。参见孙良国：《违约责任中所获利益赔偿的研究》，《法制与社会发展》2008年第1期，第31-32页。
具体判决内容参见http: //www. projectposner. org/case/1985/769F2d1284, 2009-3-10.
【参考文献】{1}如唐清利．效率违约：从生活规则到精神理念的嬗变[J]．法商研究，2008, (2)；孙良国．效率违约理论研究[J]．法制与社会发展，2006, (5)；王艳丽，戴枫．效率违约理论述评[J]．学海，2008, (3).
{2}Seana Valentine Shiffrin. The Divergence of Contract and Promise [J]．Harvard Law Review, 2007，（Vol. 120,No. 3）．
{3}David Baumer, Patricia Marshal. Willful Breach of Contract for the Sale of Good: Can the Bane of Business Be an E-conomic Bonanza [J]．Temple Law Review, 1992，（Vol. 65，No.1）．
{4}Steven Shavell. Is Breach of Contract Immoral? [J]．Emory Law Journal, 2006，（Vol. 56，No.2）．
{5}Seana Valentine Shiffrin. Could Breach of Contract be Immoral [J]．Michigan Law Review, 2009，(Vol. 107，No.8)．
{6}Tess Wilkinson-Ryan. Moral Judgment and Moral Heuristics in Breach of Contract[EB/OLI．
http://ssrn.com/abstract＝930144. 2009-8-13.
{7}Tess Wilkinson-Ryan. Do Liquidated Damages Encourage Breach? A Psychological Experiment [J]．Michigan Law Review, 2010, (Vol.108，No.5)．
{8}Melvin A. Eisenberg. Actual and Virtual Specific Performance the Theory of Efficient Breach and the Indifference Principle in Contract Law [J]．California Law Review, 2005，(Vol.93，No.4)．
{9}孙良国．效率违约理论研究[J]．法制与社会发展，2006,(5).
{10}Karl N. Llewellyn. What Price Contract? An Exercise in Perspective[J]．Yale Law Journal, 1931，(Vol. 40,No. 5)．
{11}Ian R. Macneil. Efficient Breach of Contract: Circles in the Sky [J]．Virginia Law Review, 1982,(Vol. 68，No.5)．
{12}Barry E. Adler. Efficient Breach Theory Through the Looking Glass [J]．New York University Law Review, 2008，(Vol. 68. No. 6)．
{13}Dawiner S. Sdidhu. The Immorality and Inefficiency of an Efficient Breach [J]．TRANSACTIONS: The Tennessee Journal of Business Law, 2006，( Vol.8，No.1)．
{14}Joseph Perillo. Misreading Oliver Wendell Holmes on Efficient Breach and Tortious Interference [J]．Fordham Law Review, 2000，(Vol. 68，No.4)．
{15}Craig S. Warkol. Resolving the Paradox Between Legal Theory and Legal Act: The Judicial Rejection of the Theory of Efficient Breach [J]．Cardozo Law Reirew, 1998，（Vol. 20, NO. 1）．
{16}王艳丽，戴枫．效率违约理论述评—拿来、批判或是选择性吸收？[J]．学海．2008, (03).
{17}Ronald J. Scalise Jr.. Why No “Efficient Breach” in the Civil Law? A Comparative Assessment of the Doctrine of Efficient Breach of Contract[J]．American Journal of Comparative Law, 2007，(Vol. 55，No. 4)．
{18}Hugh Collins. The Law of Contract(Fourth Edition)[M]．East Kilbride: LexisNexis. 2003.
{19}Allan Farnsworth. Contracts(Fourth Edition)[M] New York: Aspen Publishers. 2004.
