Summary

by John Marshall Harlan United States v. E. C. Knight Company…

In my judgment, the citizens of the several states composing the Union are entitled of right to buy goods in the state where they are manufactured, or in any other state, without being confronted by an illegal combination whose business extends throughout the whole country, which, by the law everywhere, is an enemy to the public interests, and which prevents such buying, except at prices arbitrarily fixed by it. I insist that the free course of trade among the states cannot coexist with such combinations.
Source: Wikisource

by John Marshall Harlan United States v. E. C. Knight Company…

The common government of all the people is the only one that can adequately deal with a matter which directly and injuriously affects the entire commerce of the country, which concerns equally all the people of the Union, and which, it must be confessed, cannot be adequately controlled by any one state. Its authority should not be so weakended by construction that it cannot reach and eradicate evils that, beyond all question, tend to defeat an object which that government is entitled, by the constitution, to accomplish.
Source: Wikisource

by John Marshall Harlan United States v. E. C. Knight Company…

Undoubtedly, the preservation of the just authority of the states is an object of deep concern to every lover of his country. No greater calamity could befall our free institutions than the destruction of that authority, by whatever means such a result might be accomplished. 'Without the states in union,' this court has said, 'there could be no such political body as the United States.' Lane Co.
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature