The very term ['mental disease'] is nonsensical, a semantic mistake. The two words cannot go together except metaphorically; you can no more have a mental 'disease' than you can have a purple idea or a wise space". Similarly, there can no more be a "mental illness" than there can be a "moral illness." The words "mental" and "illness" do not go together logically. Mental "illness" does not exist, and neither does mental "health." These terms indicate only approval or disapproval of some aspect of a person's mentality (thinking, emotions, or behavior).