Mental illness is very rare and unusual. A psychopath commits antisocial acts mainly for emotional or material gain, and generally lacks a conscience. Mental illness can be cured. People with a svere mental illness can expect to have problems to some degree for life. Having schizophrenia means having a 'split personality'.
Mental illness is contagious.
The mentally ill are bad or evil. They have done nothing to cause the disease. However, many people are ashamed to have mental illness in their families. The mentally ill are morally weak. People with mental illness cannot stop their illness by trying harder, just as someone with a hearing disorder cannot hear by listening harder.