Image collection

Dr. Timothy Leary, the former psychedelic drug guru puts his all into dancing at New York's studio 54, Thursday, July 20, 1978 while he boogies at a post premier party for the opening of “Sgt. Pepper's lonely hearts club band!” (KEYSTONE/AP Photo/Drew)

Dr. Timothy Leary goes into a psychedelic experience before a crowd at Portland State College in Portland, Oregon. in this Feb. 2, 1967 file photo. Leary, the Harvard professor turned guru of LSD who encouraged the '60s generation to ``turn on, tune in, drop out,'' died Friday, May 31, 1996 of cancer, a friend said. He was 75. (KEYSTONE/AP Photo)

DR. TIMOTHY LEARY DISCUSSES LSD

Dr. Timothy Leary discusses LSD at the League for Spiritual Discovery, 551 Hudson Street in New York, April 7, 1967. (KEYSTONE/AP Photo/Eddie Adams)

USA GESELLSCHAFT "SUMMER OF LOVE"

ADVANCE FOR USE TUESDAY, JUNE 13, 2017 AND THEREAFTER-FILE - In this Jan. 15, 1967 file photo, Timothy Leary, center, leads thousands in a song at the "Human Be-In" on the Golden Gate Park Polo Fields in San Francisco. Dennis McNally, who has curated an exhibit at the California Historical Society, says the national media paid little attention to San Francisco's psychedelic community until January 1967, when poets and bands joined forces for the âÄœHuman Be-In,âÄ which unexpectedly drew about 50,000 people. Leary stood on stage and delivered his famous mantra: âÄœTurn on. Tune In. Drop out.âÄ (AP Photo)

"DIG, Leary, Timothy, 22.10.1920 - 31.5.1996, US Psychologe, Halbfigur, mit Rosemary, Barbara Mauritz, Scoop Misker, ""Join the Party"", 30.5.1969, Tim," (KEYSTONE/INTERFOTO/Robert Altman)

Timothy Leary (1920-1996), speaks at a press conference at New Haven College February 9, 1968. CSU Archives/Courtesy Everett Collection (KEYSTONE/Everett Collection/)

USA TIMOTHY LEARY

Timothy Leary addresses a crowd of hippies at the "Human Be-In" that he helped organize in Golden Gate Park, San Francisco, Calif., Jan. 14, 1967. Leary told the crowd to "Turn on, Tune in and Drop out". The event was a prelude to the "Summer of Love", which brought the hippie experience into the American mainstream (KEYSTONE/AP Photo/Bob Klein)

USA TIMOTHY LEARY 1966

Der Schriftsteller Timothy Leary (1920-1996) beim einem Vortrag am 18. Mai 1966. (KEYSTONE/Str)

Timothy Leary (1920-1996), tells the Senate Juvenile Delinquency subcommittee that one-third of all college students are experimenting with LSD and that on some campuses 65% of the students take the drug. May 13, 1966. CSU Archives/Courtesy Everett Collection (KEYSTONE/Everett Collection/)

DIG, Leary, Timothy, 22.10.1920 - 31.5.1996, US Psychologe, Portrait, zu Hause, Berkeley, Kalifornien, USA, 17.6.1969, Tim, (KEYSTONE/INTERFOTO/Robert Altman)

Dr Timothy Leary, ex-Harvard University Psychology professor, when he testified before a State Legislative Committee investigating narcotics on 14th September 1966. (KEYSTONE/UNITED ARCHIVES)

USA LSD TIMOTHY LEARY 1967

Timothy Leary speaks to a packed crowd at the University of Wisconsin in Madison, Wis., on Feb. 15, 1967. He urged the crowd of 2000 students to "turn on, tune in, and drop out" with the help of LSD and other hallucinagenics. (KEYSTONE/AP Photo)

SCHWEIZ LSD TIMOTHY LEARY 1966

Portrait von "Drogenpapst" Timothy Leary, Befuerworter fuer den Gebrauch der Drogen LSD, Peyote und Marihuana zum Zwecke der Bewusstseinserweiterung, hier auf einer Pressekonferenz am 19. September 1966. Er erzaehlte dort, dass er eine neue Religion gefunden haette, die auf den Gebrauch von LSD, Peyote und Marihuana in sakramentaler Weise basiert, der Name der neuen Religion waere das Buendnis der Spirituellen Entdeckung. Um den Mitgliedern der Sekte den Gebrauchen der Drogen zu Hause in ihrem "Schrein" zu ermoeglichen, wuerde er die Verfassungsrechte pruefen. (KEYSTONE/Photopress-Archiv/Str)

SCHWEIZ LSD TIMOTHY LEARY 1970

The American scientist and promoter of a responsable use of the drug LSD - Timothy Leary - is out on bail, pictured on August 7, 1970 in a hotel in Lausanne. The temporary release from prison was ordered because of health implications. He was arrested on June 30,1970 in Villars-sur-Ollon, Switzerland. (KEYSTONE/Photopress-Archiv/Arrigoni) === , BLACK AND WHITE Der amerikanische Wissenschaftler und "Drogenapostel" Timothy Leary ist auf Kaution wieder auf freien Fuss gesetzt worden, aufgenommen am 7. August 1970 in einem Hotel in Lausanne. Die provisorische Haftentlassung erfolgte aus gesundheitlichen Gruenden. Er wurde am 30. Juni 1970 in Villars-sur-Ollon verhaftet. (KEYSTONE/Photopress-Archiv/Arrigoni) === , BLACK AND WHITE

USA LSD TIMOTHY LEARY

Der US-amerikanische "Drogenpapst" Timothy Leary steht vor einer Kinoreklame, undatierte Aufnahme. (KEYSTONE/PHOTOPRESS-ARCHIV/Str) === , ===

USA LSD TIMOTHY LEARY 1972

Timothy Leary (1921-1996) psychologue americain ici en 1972. -American psychologist here in 1972. (KEYSTONE/Horst Tappe) === , ===

SCHWEIZ LSD TIMOTHY LEARY 1973

The American scientist and promoter of a responsable use of the drug LSD Timothy Leary at a recording studio at the Nova Park in Zurich, Switzerland, on March 19, 1973. (KEYSTONE/Photopress-Archiv/Str) Der amerikanische Wissenschaftler und "Drogenapostel" Timothy Leary in einem Tonstudio im Nova Park in Zuerich, aufgenommen am 19. Maerz 1973. (KEYSTONE/Photopress-Archiv/Str) === , ===

Timothy Leary, 57, the former promoter of mind-expanding drugs, is now promoting space travel and colonization of outer space. Leary is shown in Seattle where he lectured on the subject, July 16, 1977. (AP Photo/Seattle Post-Intelligencer/Howard Staples) No Sales (KEYSTONE/AP Seattle Post-Intelligencer/Howard Staples)

EV1874 - TIMOTHY LEARY (KEYSTONE/EVERETT COLLECTION/) === ===

DR. TIMOTHY LEARY AND BARBARA CHASE WITH ZACHARY CHASE

Dr. Timothy Leary, former Harvard professor who became the drug guru of the 60s, is with bride Barbara Chase and her son from a previous marriage Zachary, 5, after their marriage at her Beverly Hills home, Tuesday, Dec. 20, 1978. They have known each other for seven months but decided to wed only Tuesday afternoon. Chase describes herself as a “World Traveler.” It is the fourth marriage for both Leary, 58, and his 29-year-old bride. (KEYSTONE/AP Photo/Huynh)

Timothy Leary with his wife, Rosemary, was bidding for votes in Berkeley in his campaign to turn on California's electorate, May 23, 1969. Leary said, "If I'm governor, the State Highway Patrol would be picking up hitch-hickers and helicopters would not be spraying down war gas but some love gas and flowers." (AP Photo) (KEYSTONE/AP/)

Dr. Timothy Leary, former Harvard Professor and drug advocate, accompanied by a friend, Joanna Harcourt-Smith, smiles on arrival at Heathrow Airport from Kabul, Afghanistan, Jan. 18, 1973. Two federal agents of the U.S. Bureau of Narcotics and Dangerous Drugs escorted the couple from Kabul, where Dr. Leary had been arrested. (KEYSTONE/AP/)

USA LSD TIMOTHY LEARY 1967

Timothy Leary, former Harvard psychiatrist and the onetime "high priest" of LSD, gets a hug from his wife Joanna after being freed on bond from the federal Metropolitan Correctional Center in San Diego, Ca., on April 21, 1976. Today, Leary at age 75, is dying of prostate cancer. (KEYSTONE/AP Photo)

SCHWEIZ LSD TIMOTHY LEARY 1970

The American scientist and promoter of a responsable use of the drug LSD - Timothy Leary and his wife Rosemary Leary pose on August 7, 1970 in a hotel in Lausanne for a photographer. Leary is out on bail, he was arrested on June 30,1970 in Villars-sur-Ollon, Switzerland. The temporary release from prison was ordered because of health implications. (KEYSTONE/Photopress-Archiv/Arrigoni) === , BLACK AND WHITE Der amerikanische Wissenschaftler und "Drogenapostel" Timothy Leary und seine Frau Rosemary posieren am 7. August 1970 in einem Hotel in Lausanne fuer die Fotografen. Leary wurde am 30. Juni 1970 in Villars-sur-Ollon verhaftet und ist nun gegen Kaution wieder auf freien Fuss gesetzt worden. Die provisorische Haftentlassung erfolgte aus gesundheitlichen Gruenden. (KEYSTONE/Photopress-Archiv/Arrigoni) === , ===

Timothy Leary (right, 1920-1996), and his son Jackie Leary (left), 16. May 28, 1966. CSU Archives/Courtesy Everett Collection (KEYSTONE/Everett Collection/)

Allen Ginsberg (1927-1997), Timothy Leary (1920-1996), and Ralph Metzner (left to right) standing in front of a ten foot plaster Buddha, preparing for a "psychedelic celebration" at the Village Theater, New York City. 1965, (KEYSTONE/Everett Collection/)

Timothy Leary, left, the famous 60's guru, and talk show host Wil Shriner discuss Leary's enthusiasm for Nancy Reagan's "Just Say No anti-drug campaign on the nationally televised "Wil Shriner Show", Jan. 23, 1988. The program will air February 4. (AP Photo) No Sales (KEYSTONE/AP/)

SCHWEIZ GOLOWIN LEARY 1972

Undatierte Aufnahme des Schweizer Schriftstellers Sergius Golowin (links), zusammen mit dem amerikanischen Psychologen und "Drogenpapst" Timothy Leary, aufgenommen im Juli 1972. (KEYSTONE)

USA LSD TIMOTHY LEARY

Timothy Leary (1920-2003), US-amerikanischer Psychologe, Autor und Befuerworter bewusstseinserweiternder Drogen wie LSD, besucht mit seiner 20-jaehrigen Frau Rosemary ein Hippietreffen in Long Beach, Kalifornien, undatierte Aufnahme. (KEYSTONE/CAMERA PRESS/Ray Hamilton) === , ===

USA LSD TIMOTHY LEARY 1966

Der amerikanische Wissenschaftler und "Drogenapostel" Timothy Leary, rechts, und ein Freund posieren am 18. April 1966 im sogenannten "LSD-Schloss" in Millbrook, New York. (KEYSTONE/Photopress-Archiv/Str)

In the custody of 2 customs officials, Dr Timothy Leary (centre) is led into the US Customs House following his arrest at La Guardia Airport. Dr Leary, the leading exponent of the use of the controversial drug LSD, was picked up when he stepped from a Toronto to New York plane under a section of federal law prohibiting users of narcotics or convicted narcotics violators to leave or re-enter the United States without permission..11 October 1966 (KEYSTONE/United Archives / TopFoto/Personalities)

Dr. Timothy Leary, at right with his wife Rosemary, is handed a warrant for his arrest as a detective, left, took him in custody at the start of what Leary had announced would be a news conference in Los Angeles, July 25, 1969. The former Harvard instructor and advocate of LSD, is charged with contributing to the delinquency of a minor following the drowning of a teenage girl on his ranch. (AP Photo/Los Angeles Times) No Sales (KEYSTONE/AP Los Angeles Times/)

USA LSD TIMOTHY LEARY VERHAFTUNG 1970

Der amerikanische Wissenschaftler und "Drogenapostel" Timothy Leary wird von Bundesbeamten abgefuehrt, nachdem er kurz davor zu einer Gefaengnisstrafe von zehn Jahren fuer Marihuana-Schmuggel verurteilt wurde, aufgenommen im Jahr 1970 in Houston, Texas. (KEYSTONE/PHOTOPRESS-ARCHIV/AP/Str)

FILE--Timothy Leary, Harvard professor turned guru of LSD who encouraged the '60s generation to "turn on, tune in, drop out," died Friday, May 31, 1996, of cancer, a friend said. He was 75. He is shown in an October 27, 1995, file picture. (KEYSTONE/AP Photo/FILE, Douglas C. Pizac)

This 1988 photograph shows former Harvard University professor Timothy Leary during a visit to the Cambridge, Mass. school on the 25th anniversary of his leaving Harvard. Leary died in his sleep of cancer Friday May 31, 1996 at his Beverly Hills home, it was reported. (KEYSTONE/AP Photo/Joe Wrinn-Harvard University)

USA LSD TIMOTHY LEARY 1992

Der amerikanische Drogen-Guru und Psychologe Timothy Leary - Portrait vom 6. September 1992 in Beverly Hills -, eine der umstrittensten Figuren der Hippie-Bewegung in den sechziger Jahren, ist tot. Leary (75) starb am 31. Mai 1996 in seinem Haus in Beverly Hills an Prostata-Krebs. Der Tod des frueheren Harvard-Professors wurde ueber das Internet mitgeteilt. Timothy Leary, der sich gewissenhaft auf den Tod vorbereitet hatte, erklaerte Monate zuvor angesichts der unheilbaren Erkrankung, er freue sich auf das nahende Ende als seine "ultimative Erfahrung". Experimente mit psychedelischen Drogen wie LSD trugen ihm zweifelhaften Ruhm ein. Nach seinem Rausschmiss aus der ehrwuerdigen Harvard-University wurde er als "Uncle Tim" zur Kultfigur der Gegenkultur. (KEYSTONE/AFP/Nelson)

Dr. Timothy Leary poses for a portrait at his home in Beverly Hills Thursday, Nov. 30, 1995. Leary, 75, who coined the phrase "Tune in, Turn on, and Drop out, " died of cancer at his home early Friday morning, May 31, 1996. (KEYSTONE/AP Photo/Mark J. Terrill)

USA LSD TIMOTHY LEARY

Portrait of LSD guru Timothy Leary, taken in January 1996. Leary, Harvard professor turned hippie who encouraged the '60s generation to 'turn on, tune in, drop out' died in 1996. (KEYSTONE/AP Photo/Walt Weis)

Timothy Leary im Juli 1992 zu Hause in Beverly Hills, Kalifornien. (KEYSTONE/AP Photo/files)