Summary

Horace Gray Spencer v. Merchant — Opinion of the Court

The constitutional validity of law is to be tested, not by what has been done under it, but by what may by its authority be done. The legislature may prescribe the kind of notice, and the mode in which it shall be given, but it cannot dispense with all notice.' And, on page 190, it was further said: 'The legislature can no more arbitrarily impose an assessment for which property may be taken and sold, than it can render a judgment against a person without a hearing.
Source: Wikisource

Horace Gray Spencer v. Merchant — Opinion of the Court

It is a rule founded upon the first principles of natural justice, older than written constitutions, that a citizen shall not be deprived of his life, liberty, or property, without an opportunity to be heard in defense of his rights, and the constitutional provision that no person shall be deprived of these 'without due process of law' has its foundation in this rule.
Source: Wikisource

Horace Gray Spencer v. Merchant — Opinion of the Court

But the legislature has the power to determine, by the statute imposing the tax, what lands, which might be benefited by the improvement, are in fact benefited; and if it does so, its determination is conclusive upon the owners and the courts, and the owners have no right to be heard upon the question whether their lands are benefited or not, but only upon the validity of the assessment, and its apportionment among the different parcels of the class which the legislature has conclusively determined to be benefited.
Source: Wikisource

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