Professor Philip K. Hitti in his book History of the Arabs says

Simple and frugal in manner the energetic and talented Umar (634-644) who was of towering height, strong physique and bald headed, continued at least for some time after becoming the Caliph to support himself by trade and lived throughout his life in a style as unostentatious as that of a Bedouin Sheikh. In fact, Umar, whose name according to Muslim tradition is the greatest in early Islam after that of Mohammad, has been idolized by Muslim writers for his piety, justice and patriarchal simplicity and treated as the personification of all the virtues a Caliph ought to possess. His irreproachable character became an exemplar for all conscientious successors to follow. He owned, we are told, one shirt and one mantle only, both conspicuous for their patchwork, slept on a bed of palm leaves, and had no concern other than the maintenance of the purity of the faith, the upholding of justice and the ascendancy and security of Islam and the Arabians. Arabic literature is replete with anecdotes extolling Umar's stern character. He is said to have scourged his own son to death for drunkenness. Having in a fit of anger inflicted a number of stripes on a Bedouin who came seeking his succor against an oppressor, the Caliph soon repented and asked the Bedouin to inflict the same number on him. But the latter refused. So Umar retired to his home with the following soliloquy: 'O son of Al-Khattab humble thou wert and Allah has elevated thee, thou went astray, and Allah hath guided thee; thou were weak, and Allah hath strengthened thee. Then He caused thee to rule over the necks of thy people, and when one of them came seeking thy aid thou didst strike him! What wilt thou have to say to thy Lord when thou presentest thyself before Him'. The one who fixed the Hijrah as the commencement of the Muslim era, presided over the conquest of large portions of the then known world, instituted the state register and organized the government of the new empire, met a tragic and sudden death at the very zenith of his life when he was struck down by the poisoned dagger of a Christian Persian slave in the midst of his own congregation."

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Forget safety.Live where you fear to live.Destroy your reputation.Be notorious