Mater et Magistra §145

¹⁴⁵ Theirs is a work which carries with it a dignity all its own. It brings into its service many branches of engineering, chemistry and biology, and is itself a cause of the continued practical development of these sciences in view of the repercussions of scientific and technical progress on the business of farming. It is a work which demands a capacity for orientation and adaptation, patient waiting, a sense of responsibility, and a spirit of perseverance and enterprise.