I believe other cultures, native American for instance, considered a person we would call crazy as imbued with supernatural powers, the good kind.

This is interesting information @owasco. I wonder what characteristics needed to be displayed for a person to be regarded mad in those kind of civilizations. I know that every ancient civilization explained madness from a supernatural perspective. Archeologists have unearthed skulls that were dated from back to 5000 BC, which had been trepanned (a surgical intervention in which a hole is drilled the skull).

It is understood that was because the individual was thought to have been possessed by demons, and the hole would allow them to escape. But, of course, what kind of behaviour they were displaying for such conclusions to be made is unknown. A safe bet is epileptic seizures.

Thank you @owasco for your constant support & thoughtful comments :)