The law does not expect a man to be prepared to defend every act of his life which may be suddenly and without notice alleged against him.

The Constitution is colorblind, and neither knows nor tolerates classes among citizens.

An unlimited power to tax involves, necessarily, a power to destroy; because there is a limit beyond which no institution and no property can bear taxation.

It is emphatically the province and duty of the Judicial Department to say what the law is.

Have no power, by taxation or otherwise, to retard, impede, burden or in any manner control the operations of the constitutional laws enacted by Congress.