Majorly. Imagine not being able to grasp reality, and living in a constant dream/nightmare state. You can't tell whats real and not, and normally you start to live in your dream state and forsake reality.
Like 6 I think
It means someone is discussing insanity like it is a person. It is giving human like qualities to something non-human. Example: Insanity lurked around every corner. It waited for her. It was only a matter of time before they came face to face. She knew she could not hide from insanity forever.
A demon-possessed person is a fictional concept, while "insanity" is a legal term denoting a person's inability to distinguish between right and wrong. People with mental illnesses, on the other hand, generally have some sort of physiological malfunction in their brain.
To an extent insanity is a matter of opinion. In the view of the public it is possible to bring people back from insanity through mental rehabilitation and therapy. However it is difficult, and is quite possible that the person may stay insane for the rest of their life
it was a mark of insanity
No, insanity is the antonym of sanity.
See Answers.com page for insanity: http://www.answers.com/topic/quote-4?subject=Insanity&s2=Insanity
The legal insanity will look at if the person was aware of what they were doing in the crime. Mental illness can encompass many other issues outside of committing a crime.
It takes a long time, but yes. Also, it could make you do things that affect your health in other ways (dimentia, insanity...)
Insanity Radio was created in 1998.
Fragments of Insanity was created in 1989.
Divine Insanity was created in 2007.