It told stories about a beautiful and virtuous wife disliked by her mother-in- law, the difficulty of marriage between people of different religions, the hatred of a poor person b his brother and his neighbor, rich merchants who visited other kingdoms, the importance of a man himself following the rules he sets for other people's behavior, the spite of a man for a woman who rejected him, the relative lack of enthusiasm of a wife for sex as compared to her husband, a mother giving up her own comfort for that of her child, the revenge killing of a murderer by the dead man's friends, the joy of seeing a loved one after years of separation, that life is more sad than happy, that lost money can be retrieved, but time lost is lost forever. Other stories in the Canterbury Tales were about two men who did not remain friends after they fell in love with the same woman, about a child who preferred to learn from an older child than from his school-teacher, about a wife who convinced her husband not to avenge her beating for the sake of peace, about a man who woke up from bad dreams full of fear, about a man wanting to marry a beautiful woman but later realizing a plain wife would not be pursued by other men, about a man who drank so much wine that he lost his mental and physical powers, about a woman who married for money instead of love, about a man who said something in frustration which he didn't mean, about a person brought up in poverty who endured adversity better than one brought up in wealth, about a wife who was loving and wise, about a good marriage being more valuable than money, about a virgin who committed suicide rather than be raped, about a wife persuaded to adultery by a man who said he would otherwise kill himself, about three men who found a pile of gold and murdered each other to take it all, about an angry man who wanted to kill, about a malicious man who had joy in seeing other men in trouble and misfortune, about a man whose face turned red in shame, about a wife expecting to have half of what her husband owned. Will Langland's poem "The Vision of William Concerning Piers Plowman" portrays a pilgrimage of common people to the shrine of Truth led by a virtuous laborer. Mystics wrote practical advice with transcendental teaching, for instance "Scale of Perfection" attributed to Walter Hilton and "Cloud of Unknowing". Richard Rolle wrote about spiritual matters, probably the "Prick of Conscience". Richard de Bury wrote "Philobiblon" about book lovers. Jean Froissart wrote the "Chronicles" on knights. Courtly ideals were expressed in "Sir Gawaine and the Grene Knyght", wherein the adventures of the hero, an Arthur knight, are allegorical in the struggle against the world, the flesh, and the devil (1370). "Pearl" eulogized all that is pure and innocent on the event of the death of a two year old child. Paper supplemented parchment, so there were more books.