But the interest between the traveller and his home was maintained by another bond. A striking feature of Jewish wayfaring life was the writing of letters home. The "Book of the Pious," composed about 1200, says: "He that departs from the city where his father and mother live, and travels to a place of danger, and his father and mother are anxious on account of him; it is the bounden duty of the son to hire a messenger as soon as he can and despatch a letter to his father and mother, telling them when he departs from the place of danger, that their anxiety may be allayed." Twice a year all Jews wrote family letters, at the New Year and the Passover, and they sent special greetings on birthdays. But the traveller was the chief letter-writer. "O my father," wrote the famous Obadiah of Bertinoro, in 1488, "my departure from thee has caused thee sorrow and suffering, and I am inconsolable that I was forced to leave at the time when age was creeping on thee. When I think of thy grey hairs, which I no longer see, my eyes flow over with tears. But if the happiness of serving thee in person is denied to me, yet I can at least serve thee as thou desirest, by writing to thee of my journey, by pouring my soul out to thee, by a full narrative of what I have seen and of the state and manners of the Jews in all the places where I have dwelt." After a long and valuable narrative, he concludes in this loving strain: "I have taken me a house in Jerusalem near the synagogue, and my window overlooks it. In the court where my house is, there live five women, and only one other man besides myself. He is blind, and his wife attends to my needs. God be thanked, I have escaped the sickness which affects nearly all travellers here. And I entreat you, weep not at my absence, but rejoice in my joy, that I am in the Holy City. I take God to witness that here the thought of all my sufferings vanishes, and but one image is before my eyes, thy dear face, O my father. Let me feel that I can picture that face to me, not clouded with tears, but lit with joy. You have other children around you; make them your joy, and let my letters, which I will ever and anon renew, bring solace to your age, as your letters bring solace to me." Much more numerous than the epistles of sons to fathers are the letters of fathers to their families. When these come from Palestine, there is the same mingling of pious joy and human sorrow--joy to be in the Holy Land, sorrow to be separated from home. Another source of grief was the desolation of Palestine.