60 This development in the social life of man is at once a symptom and a cause of the growing intervention of the State, even in matters which are of intimate concern to the individual, hence of great importance and not devoid of risk. We might cite as examples such matters as health and education, the choice of a career, and the care and rehabilitation of the physically and mentally handicapped. It is also partly the result, partly the expression of a natural, well-nigh irresistible urge in man to combine with his fellows for the attainment of aims and objectives which are beyond the means or the capabilities of single individuals. In recent times, this tendency has given rise to the formation everywhere of both national and international movements, associations and institutions with economic, cultural, social, sporting, recreational, professional and political ends.
Source: Mater et Magistra (Vatican.va)