Leary v. United States, 395 U.S. 6 (1969) , is a U.S. Supreme Court case dealing with the constitutionality of the Marihuana Tax Act of 1937.
 Timothy Leary, a professor and activist, was arrested for the possession of marijuana in violation of the Marihuana Tax Act.
 Leary challenged the act on the ground that the act required self-incrimination, which violated the Fifth Amendment.
 The unanimous opinion of the court was penned by Justice John Marshall Harlan II and declared the Marihuana Tax Act unconstitutional.
 Thus, Leary's conviction was overturned.
 Congress responded shortly thereafter by replacing the Marihuana Tax Act with the newly written Controlled Substances Act while continuing the prohibition of certain drugs in the United States.
The Harvard Psilocybin Project was a series of experiments in psychology conducted by Dr. Timothy Leary and Dr. Richard Alpert.
 The founding board of the project consisted of Leary, Aldous Huxley, David McClelland (Leary's superior at Harvard University), Frank Barron, Ralph Metzner, and two graduate students who were working on a project with mescaline.
 The experiments began some time in 1960 and lasted until March 1962, when other professors in the Harvard Center for Research in Personality raised concerns about the legitimacy and safety of the experiments in an internal meeting.
"Turn on, tune in, drop out" is a counterculture-era phrase popularized by Timothy Leary in 1966.
 In 1967 Leary spoke at the Human Be-In, a gathering of 30,000 hippies in Golden Gate Park in San Francisco and phrased the famous words, "Turn on, tune in, drop out".
 It was also the title of his spoken word album "Turn On, Tune In, Drop Out" recorded in 1966.
 On this lengthy album one can hear Leary speaking in a monotone, soft-spoken voice on his views about the world and humanity and describing nature, Indian symbols, "the meaning of inner life", the LSD experience, peace and many other issues.
The Leary–Lettvin debate was a May 3, 1967 debate between Dr. Jerome Lettvin, a medical doctor and professor at MIT, and Dr. Timothy Leary, a licensed psychologist, about the merits and dangers of the hallucinogenic drug LSD.
 It took place in the Kresge Auditorium at the Massachusetts Institute of Technology.
Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and writer known for advocating the exploration of the therapeutic potential of psychedelic drugs under controlled conditions.
 Leary conducted experiments under the Harvard Psilocybin Project during American legality of LSD and psilocybin, resulting in the Concord Prison Experiment and the Marsh Chapel Experiment.
 Leary's colleague, Richard Alpert (Ram Dass), was fired from Harvard University on May 27, 1963 for giving psilocybin to an undergraduate student.
 Leary was planning to leave Harvard when his teaching contract expired in June, the following month.
 He was fired, for "failure to keep classroom appointments", with his pay docked on April 30.
 National illumination as to the effects of psychedelics did not occur until after the Harvard scandal.
You Can Be Anyone This Time Around is an album by Timothy Leary released in 1970.
 The disc features three "raps" by Leary backed with psychedelic music.
 The purpose of the album was to raise funds for Leary's political candidacy for Governor of California.
Enoch Arnold Bennett (27 May 1867 – 27 March 1931) was an English writer.
 He is best known as a novelist, but he also worked in other fields such as the theatre, journalism, propaganda and films.
Dying to Know: Ram Dass & Timothy Leary is a 2014 documentary film about Ram Dass and Timothy Leary.
The League for Spiritual Discovery was a spiritual organization inspired by the works of Timothy Leary, and strove for legal use of lysergic acid diethylamide (LSD) for the purpose of meditation, insight, and spiritual understanding.
 It was in existence during the mid-to-late 1960s, and eventually closed by Leary.
 The New York Center for the League of Spiritual Discovery, in existence for around a year, was co-founded by Timothy Leary and Nina Graboi in 1966.
 The center was the first LSD-based meditation center in Manhattan.
"Question authority" is a popular slogan often used on bumper stickers, T-shirts and as graffiti.
 The slogan was popularized by controversial psychologist Timothy Leary, although some people have suggested that the idea behind the slogan can be traced back to the ancient Greek philosopher Socrates.
 One of the most influential icons in the counterculture movement which formed in the late 1960s out of opposition to the Vietnam War's escalation, Leary gained influence among much of the youth by advocating the use of Lysergic acid diethylamide (LSD) – which was criminalized in the United States in 1966 – as a way to escape from the burdens of society.
 Following the Watergate Scandal, which resulted in the resignation of US President Richard Nixon and the conviction of several officials in the Nixon administration, the slogan became arguably the most accepted form of ideology among baby boomers.

Question: Who has more scope of profession,  Arnold Bennett or Timothy Leary?
Answer: Timothy Francis Leary