The most decisive quality of a effective political leader is to keep a insightful perspective and hold the primary principles consistently.Looking through the history,there are many outstanding political leaders that remain consistently committed to their principles and objectives under censures from every corner.Ultimately,they were proven wise by later generations,for instance,President Roosevelt,who led the brilliant reformation after the Great Depression then announced the US' participation into the World WarⅡ,and Martin Luther King Jr.,leader of series civil rights movements for elevating the social status of the American-Africans.None of these figures yielded when confronted with disagreement or hostility,instead they stood their positions all the way forward,yet they were still excellent political leaders who improved living conditions for their people effectively.The most decisive quality of a effective political leader is to keep a insightful perspective and hold the primary principles consistently.　　　Stands of the public varies regarding to the group they joint,from egocentricity to egalitarianism,from Cynicism to elitism.Thus demands of these social blocks are diverse as some asking for higher public welfare while some others sticking to tightening the budget.And individuals' opinions always generate from things that they are asking for,said Yonghong Mao,a successful sociologist in China whose position-determining theory is widely accepted.What highly primary one political leader must concentrate on is to stabilize the nation and enrich the people,both spiritually and materially,to steer the government making the decisions as smart as possible to benefit from and to the globalization,cited from Paul Samuelson's Macro Economy,16th Edition.Once in the past the Americans,of course rejected the deal,ridiculed Seward,Secretary of State,on purchasing Alaska,which was jokingly named as 'The Icebox'.But only a few years later the icy land surprised the whole country with its rich resources and significant strategic location.Nobody will treat this immense mine as inutility or consider the Secretary as silly any longer.　　　Factors to settle a determination for the federal government,as depicted in John Maynard Keynes' theories,come in a variety of pressures,ranging from domestic economic development to international currency policies,to chain-reactions of fundamental industries to fluctuation of the social Gini coefficient.Public opinion is one among these factors but is never the unique one. During the 1990s' reformation of state-owned enterprises in China,sluggish market performance confronted with the opinion held by the public that had the entrenched industrial structure been broken,no good could emerge.Nevertheless,Premier Rongji Zhu sticked to the reforming amendments(albeit suffered great pain of high unemployment rate in several years),which were soon proven effective and efficient.The average residents might not be as insightful and sensitive as experienced political leaders to think over the whole circumstance,and they may aware of the benefit years behind the curve.  　　　If Kantism describe appropriately of the real world,that the truth will rarely be entirely known,the demands of public might not be exactly expressed nor intactly conveyed,which makes 'listening' debatable.Ways for speaking out generally include traditional media like telephone hot-lines and newspapers,and new ones such as micro-blogs,social network sites,even the agitating actions,illustrated with demonstration and rebellion,are sometimes agitprop of some small groups then followed by stodgers.A case in point is the survey conducted after a students' strike in Hefei City,China,aimed to find out the main require of those demonstrators.The result was somehow unexpected that among the mass answerers who were picked up randomly,80% didn't know even the purpose of the action,they just took the short 'vacation' produced by the strike,no mentioning about their deep-hearted demands nor the final expression in the demonstration.　　　What if one political leader yield to public opinion and abandon the principles for the sake of compromise just to be effective during his years in power?See the damaging contaminants in the Yangtze River left by factories because of provincial economic policies permit and barren land in the western Inner Mongolia of China attributed to tree cutting-selling-burning activities derived from farmland expansion plans.Years of chase for vanity projects and oblivion of environmental protection now charge the people for repayment-lacking of edible water along the riverside,billions of budget spent,however unwillingly,on plant trees and grass back to the desertificated areas.These phenomena are overwhelmingly attributed to the short-sighted effects aroused by acquisition for approval,according to surveys to study the reasons why politicians tended to be so short-term greedy in the past 5 decades,which designed by the most authoritative public policy program in the Mainland of China.　　　Truly that regardless of public voices is too arbitrary and segmentary for a leader to make decisions for his people.Qing Dynasty might not be overturned because of falling behind other countries over the world,if the ruling hierarchy had considered the desire of industrialization while it was simultaneously forming on the European continent.　　　However,when discussing about the most essential quality,remaining consistently committed to national-benefit principle and long-term developing objectives is much more important.A political leader who has this quality is able to distinguish what is good for his people from the harmful,therefore lead the government effectively and efficiently from the very foundation.