Table of contents : What is it to believe someone? -- Faith -- Prophecy and miracles -- Hume on miracles -- Paganism, superstition and philosophy -- On the hatred of God -- On attachment to things and obedience to God -- Twenty opinions common among modern Anglo-American philosophers -- The immortality of the soul -- On transubstantiation -- Authority in morals -- On being in good faith -- Morality -- Sin -- Two moral theologians -- Contraception and chastity -- On Humanae vitae -- Address to the clergy : on contraception and natural family planning -- Contraception, chastity and the vocation of marriage -- The early embryo: theoretical doubts and practical certainties -- The moral environment of the child -- Christians and nuclear weapons designed for the destruction of cities -- Simony in Africa -- Philosophers and economists : two philosophers' objections to usury -- On wisdom.