Psychiatry is the medical specialty devoted to the study and treatment of mental disorders. These mental disorders include various affective, behavioural, cognitive and perceptual abnormalities. The term was first coined by the German physician Johann Christian Reil in 1808, and literally means the 'medical treatment of the mind' (psych-: mind; from Ancient Greek psykhē: soul; -iatry: medical treatment; from Gk. iātrikos: medical, iāsthai: to heal). A medical doctor specializing in psychiatry is a psychiatrist.

Psychiatric assessment typically starts with a mental status examination and the compilation of a case history. Psychological tests and physical examinations may be conducted, including on occasion the use of neuroimaging or other neurophysiological techniques. Mental disorders are diagnosed in accordance with criteria listed in diagnostic manuals such as the widely used Diagnostic and Statistical Manual of Mental Disorders (DSM), published by the American Psychiatric Association, and the International Classification of Diseases (ICD), edited and used by the World Health Organization. The fifth edition of the DSM (DSM-5) is scheduled to be published in 2013, and its development is expected to be of significant interest to many medical fields.

The Reign of Terror (5 September 1793 – 28 July 1794) (the latter is date 10 Thermidor, year II of the French Revolutionary Calendar), also known simply as The Terror (French: la Terreur), was a period of violence that occurred after the onset of the French Revolution, incited by conflict between rival political factions, the Girondins and the Jacobins, and marked by mass executions of "enemies of the revolution." The death toll ranged in the tens of thousands, with 16,594 executed by guillotine (2,639 in Paris), and another 25,000 in summary executions across France.

The guillotine (called the "National Razor") became the symbol of the revolutionary cause, strengthened by a string of executions: Marie Antoinette, King Louis XVI, the Girondins, Philippe Égalité (Louis Philippe II, Duke of Orléans) and Madame Roland, as well as many others, such as pioneering chemist Antoine Lavoisier, lost their lives under its blade. During 1794, revolutionary France was beset with conspiracies by internal and foreign enemies. Within France, the revolution was opposed by the French nobility, which had lost its inherited privileges. The Roman Catholic Church was generally against the Revolution, which had turned the clergy into employees of the state and required they take an oath of loyalty to the nation (through the Civil Constitution of the Clergy). In addition, the First French Republic was engaged in a series of wars with neighboring powers intent on crushing the revolution to prevent its spread.

Monty Python (sometimes known as The Pythons) was a British surreal comedy group who created Monty Python's Flying Circus, a British television comedy sketch show that first aired on the BBC on 5 October 1969. Forty-five episodes were made over four series. The Python phenomenon developed from the television series into something larger in scope and impact, spawning touring stage shows, films, numerous albums, several books and a stage musical as well as launching the members to individual stardom. The group's influence on comedy has been compared to The Beatles' influence on music.

The television series, broadcast by the BBC from 1969 to 1974, was conceived, written and performed by members Graham Chapman, John Cleese, Terry Gilliam, Eric Idle, Terry Jones, and Michael Palin. Loosely structured as a sketch show, but with an innovative stream-of-consciousness approach (aided by Gilliam's animation), it pushed the boundaries of what was acceptable in style and content. A self-contained comedy team responsible for both writing and performing their work, the Pythons' creative control allowed them to experiment with form and content, discarding rules of television comedy. Their influence on British comedy has been apparent for years, while in North America it has coloured the work of cult performers from the early editions of Saturday Night Live through to more recent absurdist trends in television comedy. "Pythonesque" has entered the English lexicon as a result.