Pacem in Terris §150

¹⁵⁰ If these policies are really to become operative, men must first of all take the utmost care to conduct their various temporal activities in accordance with the laws which govern each and every such activity, observing the principles which correspond to their respective natures. Secondly, men's actions must be made to conform with the precepts of the moral order. This means that their behavior must be such as to reflect their consciousness of exercising a personal right or performing a personal duty. Reason has a further demand to make. In obedience to the providential designs and commands of God respecting our salvation and neglecting the dictates of conscience, men must conduct themselves in their temporal activity in such a way as to effect a thorough integration of the principal spiritual values with those of science, technology and the professions.