Chapter 6

Fertility the law of life.--Man interprets and controls this law.--Marriage law necessary to fix paternal responsibility.--Malthus's high ideal.--If prudence the motive, continence and celibacy violate no law.--Post-nuptial intermittent restraint.--Ethics of prevention judged by consequences.--When procreation is a good and when an evil.--Oligantrophy.--Artificial checks are physiological sins.