Husserl identifies evil with irrationality and considers it from two points of views. Firstly, moral evil comes from an erroneous act of consciousness, such as a mistake in judgement, evaluation, desire or behavior; it depends on a lack of human rationality. Secondly, human life is affected by the irrationality of the world. One’s life could be struck and upset by a sudden and unavoidable event such as an accident, illness, tragedy, or grief. So, improving human control on the natural world, as well as enhancing rationality of consciousness is a moral duty.

Keywords: Husserl; Evil; Irrationality; Consciousness; Moral Duty.