Posner is the author of nearly 40 books on jurisprudence, economics, and several other topics, including Economic Analysis of Law, The Economics of Justice, The Problems of Jurisprudence, Sex and Reason, Law, Pragmatism and Democracy, and The Crisis of Capitalist Democracy. Posner has generally been identified as being politically conservative; however, in recent years he has distanced himself from the positions of the Republican party authoring more liberal rulings involving same-sex marriage and abortion.
His analysis of the Lewinsky scandal cut across most party and ideological divisions. Posner's greatest influence is through his writings on law and economics; The New York Times called him "one of the most important antitrust scholars of the past half-century." In December 2004, Posner started a joint blog with Nobel Prize-winning economist Gary Becker, titled simply "The Becker-Posner Blog". Both men contributed to the blog until shortly before Becker's death in May 2014, after which Posner announced that the blog was being discontinued. He also has a blog at The Atlantic, where he discusses the financial crisis.
Posner was mentioned in 2005 as a potential nominee to replace Sandra Day O'Connor because of his prominence as a scholar and an appellate judge. Robert S. Boynton has written in The Washington Post that he believes Posner will never sit on the Supreme Court because despite his "obvious brilliance," he would be criticized for his occasionally "outrageous conclusions," such as his contention "that the rule of law is an accidental and dispensable element of legal ideology," his argument that buying and selling children on the free market would lead to better outcomes than the present situation, government-regulated adoption, and his support for the legalization of marijuana and LSD.
Posner on Posner Series
Judge Posner was the focus of a "series" of posts (many Q&A interviews with the Judge) done by University of Washington Law Professor Ronald K. L. Collins. The twelve posts—collectively titled "Posner on Posner"—began on November 24, 2014 and ended on January 5, 2015 and appeared on the Concurring Opinions blog.
In Posner's youth and in the 1960s as law clerk to William J. Brennan he was generally counted as a liberal. However, in reaction to some of the perceived excesses of the late 1960s, Posner developed a strongly conservative bent. He encountered Chicago School economists Aaron Director and George Stigler while a professor at Stanford. Posner summarized his views on law and economics in his 1973 book The Economic Analysis of Law.
Today, although generally viewed as to the right in academia, Posner's pragmatism, his qualified moral relativism and moral skepticism, and his affection for the thought of Friedrich Nietzsche set him apart from most American conservatives. As a judge, with the exception of his rulings with respect to the sentencing guidelines and the recording of police actions, Posner's judicial votes have always placed him on the moderate-to-liberal wing of the Republican Party, where he has become more isolated over time. In July 2012, Posner stated, "I've become less conservative since the Republican Party started becoming goofy." Among Posner's judicial influences are the American jurists Oliver Wendell Holmes, Jr. and Learned Hand.
Posner has written several opinions sympathetic to abortion rights, including a decision that held that late term abortion was constitutionally protected in some circumstances.
In November 2015 Posner authored a decision striking down regulations on abortion clinics in Wisconsin. He rejected the state's argument that the laws were written to protect the health of women and not to make abortion more difficult to obtain. Accusing the state of indirectly trying to ban abortions in the state Posner wrote, "They [Wisconsin] may do this in the name of protecting the health of women who have abortions, yet as in this case the specific measures they support may do little or nothing for health, but rather strew impediments to abortion."
Posner engaged in a debate on the ethics of using animals in research with the philosopher Peter Singer in 2001 at Slate magazine. He argues that animal rights conflict with the moral relevance of humanity and that empathy for pain and suffering of animals does not supersede advancing society. He further argues that he trusts his moral intuition until it is shown to be wrong and that his moral intuition says that "it is wrong to give as much weight to a dog's pain as to an infant's pain." He leaves open the possibility that facts on animal and human cognition can and may change his intuition in the future; he further states that people whose opinions were changed by consideration of the ethics presented in Singer's book Animal Liberation failed to see the "radicalism of the ethical vision that powers [their] view on animals, an ethical vision that finds greater value in a healthy pig than in a profoundly retarded child, that commands inflicting a lesser pain on a human being to avert a greater pain to a dog, and that, provided only that a chimpanzee has 1 percent of the mental ability of a normal human being, would require the sacrifice of the human being to save 101 chimpanzees."
Along with Robert Bork, Posner helped shape the antitrust policy changes of the 1970s through his idea that 1960s antitrust laws were in fact making prices higher for the consumer rather than lower, while he viewed lower prices as the essential end goal of any antitrust policy. Posner's and Bork's theories on antitrust evolved into the prevailing view in academia and at the Justice Department of the George H. W. Bush Administration.
The Bluebook is the style guide which prescribes the most widely used legal citation system in the United States. Posner is "one of the founding fathers of Bluebook abolitionism, having advocated it for almost twenty-five years, ever since his 1986 University of Chicago Law Review article on the subject." In a 2011 Yale Law Journal article, he wrote:
The Bluebook: A Uniform System of Citation exemplifies hypertrophy in the anthropological sense. It is a monstrous growth, remote from the functional need for legal citation forms, that serves obscure needs of the legal culture and its student subculture.
Posner opposes the US "War on Drugs" and called it "quixotic". In a 2003 CNBC interview he discussed the difficulty of enforcing criminal marijuana laws, and asserted that it is hard to justify the criminalization of marijuana when compared to other substances. In a talk at Elmhurst College in 2012, Posner said that "I don't think that we should have a fraction of the drug laws that we have. I think it's really absurd to be criminalizing possession or use or distribution of marijuana."
At the Cybercrime 2020: The Future of Online Crime and Investigations conference held at the Georgetown University Law Center on November 20, 2014, Posner, in addition to further reinforcing his views on privacy being over-rated, stated that “If the NSA wants to vacuum all the trillions of bits of information that are crawling through the electronic worldwide networks, I think that’s fine." “Much of what passes for the name of privacy is really just trying to conceal the disreputable parts of your conduct,” Posner added. “Privacy is mainly about trying to improve your social and business opportunities by concealing the sorts of bad activities that would cause other people not to want to deal with you.” Posner also criticized mobile OS companies for enabling end-to-end encryption in their newest software. “I’m shocked at the thought that a company would be permitted to manufacture an electronic product that the government would not be able to search” he said.
Posner has expressed concerns, on the blog he contributed to with Gary Becker, that both patent and copyright protection, though particularly the former, may be excessive. He argues that the cost of inventing must be compared to the cost of copying in order to determine the optimal patent protection for an inventor. When patent protection is too strongly in favour of the inventor, market efficiency is decreased. He illustrates his argument by comparing the pharmaceutical industry (where the cost on invention is high) with the software industry (where the cost of invention is relatively low).
As part of a three-judge panel on the 7th Circuit in Chicago, weighing a challenge to the Illinois Eavesdropping Act, which bars the secret recording of conversations without the consent of all the parties to the conversation, Posner was to deliver another memorable quote. At issue was the constitutionality of the Illinois wiretapping law, which makes it illegal to record someone without consent even when filming public acts like arrests in public. Posner interrupted the ACLU after just 14 words, stating, "Yeah, I know. But I’m not interested, really, in what you want to do with these recordings of peoples’ encounters with the police...." Posner continued: “Once all this stuff can be recorded, there’s going to be a lot more of this snooping around by reporters and bloggers.... I'm always suspicious when the civil liberties people start telling the police how to do their business." The 7th Circuit upheld the challenge 2-1, striking down the Eavesdropping Act, but Posner wrote a dissenting opinion.
In a dissent from an earlier ruling by his protégé Frank Easterbrook, Posner wrote that Easterbrook's decision that female guards could watch male prisoners while in the shower or bathroom must stem from a belief that prisoners are "members of a different species, indeed as a type of vermin, devoid of human dignity and entitled to no respect.... I do not myself consider the 1.5 million inmates of American prisons and jails in that light."
Posner minimizes the social benefit of privacy. "I'm exaggerating a little, but I think privacy is primarily wanted by people because they want to conceal information to fool others." According to one author, Posner claims that "breaking down privacy domains and promoting transparency of the population is economically and morally beneficial. Paradoxically though, for Posner, wealth maximisation means that businesses should be afforded greater levels of privacy because placing businesses under the public spotlight harms economic growth."
In a blog post, Posner wrote, "I suggest that the only worthwhile reforms of teacher compensation are raising teacher wages uniformly, providing recognition and modest bonuses for outstanding teachers, and increasing hiring standards." In the same post, he wrote, "I am not clear what we should think the problem of American education (below the college level) is. Most children of middle-class... Americans are white or Asian and attend good public or private schools, usually predominantly white. The average white IQ is of course 100 and the Asian (like the Jewish) almost one standard deviation higher, that is, 115. The average black IQ is 85, a full standard deviation below the white average, and the average Hispanic IQ has been estimated recently at 89. Black children in particular often come from disordered households, which has a negative effect on ability to learn and perhaps indeed on IQ.... Increasingly, black and Hispanic students find themselves in schools with few white or Asian students. The challenge to American education is to provide a useful education to the large number of Americans who are unlikely to benefit from a college education or from high school courses aimed at preparing students for college."
In September 2014, Posner authored the opinions in the consolidated cases of Wolf v. Walker and Baskin v. Bogan challenging Wisconsin and Indiana's state level same-sex marriage bans. The opinion of the three-judge panel on the 7th Circuit Court of Appeals ruled that Indiana and Wisconsin's bans on same-sex marriage were unconstitutional, affirming a lower court ruling. During oral arguments, Wisconsin's Attorney General cited tradition as a reason for maintaining the ban, prompting Posner to note that: "It was tradition to not allow blacks and whites to marry – a tradition that got swept away." Posner claimed that the same-sex marriage bans were both "a tradition of hate" and "savage discrimination". Posner wrote the opinion for the unanimous panel, suggesting the laws unconstitutional under the Equal Protection Clause. The Supreme Court then denied writ of certiorari and left Posner's ruling to stand.
Posner is one of the most prolific legal writers, through both the number and topical breadth of his opinions, to say nothing of his scholarly and popular writings. Unlike many other judges, he writes all his own opinions.Nobel Laureate economist Robert Solow says that Posner "is an apparently inexhaustible writer on... nearly everything. To call him a polymath would be a gross understatement.... Judge Posner evidently writes the way other men breathe", though the economist describes the judge's grasp of economics as, "in some respects, ... precarious."
In his decision in the 1997 case State Oil Co. v. Khan, Posner wrote that a ruling 1968 antitrust precedent set by the Supreme Court was "moth-eaten", "wobbly", and "unsound". Nevertheless, he abided by the previous decision with his ruling. The Supreme Court granted certiorari and overturned the 1968 ruling unanimously; Sandra Day O'Connor wrote the opinion and spoke positively of both Posner's criticism and his decision to abide by the ruling until the Court decided to change it.
A study published by Fred Shapiro in the University of Chicago's The Journal of Legal Studies found Posner is the most-cited legal scholar of all time by a considerable margin, as Posner's work has generated 7,981 cites compared to the runner-up Ronald Dworkin's 4,488 cites.
A 2004 poll by Legal Affairs magazine named Posner as one of the top twenty legal thinkers in the U.S.
In 2008, the University of Chicago Law Review published a commemorative issue: "Commemorating Twenty-five Years of Judge Richard A. Posner." A website, Project Posner, details all of Posner's many legal opinions. It was begun by Posner's former clerk, Tim Wu, who calls Posner "probably America's greatest living jurist." Another of Posner's former legal clerks, Lawrence Lessig, wrote, "There isn't a federal judge I respect more, both as a judge and person." The former dean of Yale Law School, Anthony T. Kronman, said that Posner was "one of the most rational human beings" he had ever met.