Heroin (diacetylmorphine).
An obsession is being preoccupied by a certain thought. Addiction also has the usage, or acting out component.
The repetitive thought that can be all consuming is the obsessive aspect.
Thought That It Was You was created in 2000.
I Thought About You was created in 1939.
Heroin has a very long history of use throughtout the world.It is thought that the Arab traders during the 7th and 8th century Ad took opium was taken by all classes in the form of pills or laudanum. Laudanum is opium dissolved in alchohol.In 1874 heroin was created to be a cure for those addicted to morphine. With the intention of being a safe, non-addictive substitute for morphine, heroin fell short of its expectations.Soon it was noted the heroin produced addiction exceptionally quickly in many and was made illegal in 1920.
Diamorphine is not actually stronger than morphine per se, but it does act a lot quicker than morphine. Diamorphine is converted into morphine in the body and although diamorphine and morphine are almost identical, doses of them are not therapeutically equivalent. For example, 30mg of diamorphine is the same as 45mg of morphine. So maybe diamorphine can be thought of as being stronger than morphine, as it takes 1/3 less to give the same effect. Also the quicker onset of diamorphine can give the impression of it being stronger.
I Thought of You was created in 1955-09.
The Thousandfold Thought was created in 2006.
Thought Industry was created in 1989.
Thoughts Are Thought was created in 1999.
The Stuff of Thought was created in 2007.
I Thought It Was You was created on 1991-08-13.