The object of the choice can by itself vitiate an act in its entirety. There are some concrete acts — such as fornication — that it is always wrong to choose, because choosing them entails a disorder of the will, that is, a moral evil. 1756 It is therefore an error to judge the morality of human acts by considering only the intention that inspires them or the circum stances (environment, social pressure, duress or emergency, etc.) which supply their context. There are acts which, in and of themselves, independently of circumstances and intentions, are always gravely illicit by reason of their object; such as blasphemy and perjury, murder and adultery. One may not do evil so that good 1789 may result from it. IN BRIEF 1757 The object, the intention and the circumstances make up the three ‘sources’ of the morality of human acts. 1758 The object chosen morally specifies the act of willing accordingly as reason recognizes and judges it good or evil. 1759 ‘An evil action cannot bejust~fied by reference to a good intention’ (cf. St Thomas Aquinas, Dec. praec. 6). The end does not just ~fy the means. 1760 A morally good act requires the goodness of its object, of its end, and of its circumstances together. 1761 There are concrete acts that it is always wrong to choose, because their choice entails a disorder of the will, i.e., a moral evil. One may not do evil so that good may resu It from it. Article ~ THE MORALITY OF THE PASSIONS 1762 The human person is ordered to beatitude by his deliberate acts: the passions or feelings he experiences can dispose him to it and contribute to it. I. Passions 1763 The term ‘passions’ belongs to the Christian patrimony. Feelings or passions are emotions or movements of the sensitive appetite that incline us to act or not to act in regard to something felt or imagined to be good or evil.