With regard to a safety net, Hayek advocated "some provision for those threatened by the extremes of indigence or starvation, be if only in the interest of those who require protection against acts of desperation on the part of the needy." As referenced in the section on "The economic calculation problem," Hayek wrote that "there is no reason why... the state should not help to organize a comprehensive system of social insurance." Summarizing on this topic, Wapshott writes "[Hayek] advocated mandatory universal health care and unemployment insurance, enforced, if not directly provided, by the state." Bernard Harcourt says that "Hayek was adamant about this." In the 1973 Law, Legislation, and Liberty, Hayek wrote: