调节平衡资产阶级内部的矛盾，规范和约束资产阶级政党竞争的最高原则；强有力的防止个人专制和独裁的出现。
独立，自由，民主
英文：We the people of the United States, in order to form a more perfect Union ,establish Justice, insure demostic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, to ordain and establish this Constitute for the United States of America.(宪法原文）
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