Being creative is about doing something, or saying something or coming up with something that no-one has done or said or made before. So creativity is really a deviation from the norm. What is ironic here is that we have a negative connotation to the abnormal. In psychology and biology, anything deviating from the norm is considered abnormal, requiring some sort of clinical interference to bring it back to the levels accepted as normal.
Could there be a link between insanity and creativity? Well in Lebanon, some of the greatest artists and writers and poets have a traditional way of wearing their hair long and fuzzy, a picture that is also traditionally linked to those attending a mental asylum.