QUOTE : Gradually, then rapidly and ever more widely, the Industrial Revolution changed the economic form and moral superstructure of European and American life. Men, women, and children left home and family, authority and unity, to work as individuals, individually paid, in factories built to house not men but machines. Every decade the machines multiplied and became more complex; economic maturity (the capacity to support a family) came later; children no longer were economic assets; marriage was delayed; premarital continence became more difficult to maintain. The city offered every discouragement to marriage, but it provided every stimulus and facility for sex. Women were “emancipated”—i.e., industrialized; and contraceptives enabled them to separate intercourse from pregnancy. The authority of father and mother lost its economic base through the growing individualism of industry. The rebellious youth was no longer constrained by the surveillance of the village;