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It is not necessary for the politician to be the slave of the public's group prejudices, if he can learn how to mold the mind of the voters in conformity with his own ideas of public welfare and public service. The important thing for the statesman of our age is not so much to know how to please the public, but to know how to sway the public. Those who manipulate this unseen mechanism of society constitute an invisible government which is the true ruling power of our country.