It is important at the outset to distinguish between ethics and morals. In common speech they are often used interchangeably, but in philosophy they have different connotations. Put briefly, ethics means the theory of right and wrong conduct; morals, its practice. It is more accurate to speak of ethical, rather than moral, principles; and of a moral, rather than ethical, way of behaviour. Ethics involves the values that a person seeks to express in a certain situation; morals, the way he sets about achieving this. Ethics takes the overall view; our morals bring us, so to speak, to the coal-face, where we are involved in the minutiae of behaviour.