Mr. Justice Stewart delivered the opinion of the Court.
The respondent, Kenneth Donaldson, was civilly committed to confinement as a mental patient in the Florida State Hospital at Chattahoochee in January 1957. He was kept in custody there against his will for nearly 15 years. The petitioner, Dr. J. B. O'Connor, was the hospital's superintendent during most of this period. Throughout his confinement Donaldson repeatedly, but unsuccessfully, demanded his release, claiming that he was dangerous to no one, that he was not mentally ill, and that, at any rate, the hospital was not providing treatment for his supposed illness. Finally, in February 1971, Donaldson brought this lawsuit under 42 U.S.C. § 1983, in the United States District Court for the Northern District of Florida, alleging that O'Connor, and other members of the hospital staff named as defendants, had intentionally and maliciously deprived him of his constitutional right to liberty. After a four-day trial, the jury returned a verdict assessing both compensatory and punitive damages against O'Connor and a codefendant. The Court of Appeals for the Fifth Circuit affirmed the judgment, 493 F.2d 507. We granted O'Connor's petition for certiorari, 419 U.S. 894, because of the important constitutional questions seemingly presented.
I
Donaldson's commitment was initiated by his father, who thought that his son was suffering from "delusions." After hearings before a county judge of Pinellas County, Fla., Donaldson was found to be suffering from "paranoid schizophrenia" and was committed for "care, maintenance, and treatment" pursuant to Florida statutory provisions that have since been repealed. The state law was less than clear in specifying the grounds necessary for commitment, and the record is scanty as to Donaldson's condition at the time of the judicial hearing. These matters are, however, irrelevant, for this case involves no challenge to the initial commitment, but is focused, instead, upon the nearly 15 years of confinement that followed.
The evidence at the trial showed that the hospital staff had the power to release a patient, not dangerous to himself or others, even if he remained mentally ill and had been lawfully committed. Despite many requests, O'Connor refused to allow that power to be exercised in Donaldson's case. At the trial, O'Connor indicated that he had believed that Donaldson would have been unable to make a "successful adjustment outside the institution," but could not recall the basis for that conclusion. O'Connor retired as superintendent shortly before this suit was filed. A few months thereafter, and before the trial, Donaldson secured his release and a judicial restoration of competency, with the support of the hospital staff.
The testimony at the trial demonstrated, without contradiction, that Donaldson had posed no danger to others during his long confinement, or indeed at any point in his life. O'Connor himself conceded that he had no personal or secondhand knowledge that Donaldson had ever committed a dangerous act. There was no evidence that Donaldson had ever been suicidal or been thought likely to inflict injury upon himself. One of O'Connor's codefendants acknowledged that Donaldson could have earned his own living outside the hospital. He had done so for some 14 years before his commitment, and immediately upon his release he secured a responsible job in hotel administration.
Furthermore, Donaldson's frequent requests for release had been supported by responsible persons willing to provide him any care he might need on release. In 1963, for example, a representative of Helping Hands, Inc., a halfway house for mental patients, wrote O'Connor asking him to release Donaldson to its care. The request was accompanied by a supporting letter from the Minneapolis Clinic of Psychiatry and Neurology, which a codefendant conceded was a "good clinic." O'Connor rejected the offer, replying that Donaldson could be released only to his parents. That rule was apparently of O'Connor's own making. At the time, Donaldson was 55 years old, and, as O'Connor knew, Donaldson's parents were too elderly and infirm to take responsibility for him. Moreover, in his continuing correspondence with Donaldson's parents, O'Connor never informed them of the Helping Hands offer. In addition, on four separate occasions between 1964 and 1968, John Lembcke, a college classmate of Donaldson's and a longtime family friend, asked O'Connor to release Donaldson to his care. On each occasion O'Connor refused. The record shows that Lembcke was a serious and responsible person, who was willing and able to assume responsibility for Donaldson's welfare.