...It is part of the definition of feeling that is born in us without our will, often against our will. As soon as we want to feel (decide to feel, just as Don Quixote decided to love Dulcinea), feeling is no longer feeling bur an imitation of feeling, a show of feeling. This is commonly called hysteria. That's why homo sentimentalis (a person who has raised feeling to a value) is in reality identical to homo hystericus.
M.Kundera - Immortality (p.195)
