  "My opinion is and long has been that the mayor and aldermen of a city corporation, or the president and directors of a bank, or the president and directors of a railroad company and of other similar corporations, are the true parties that sue and are sued as trustees and representatives of the constantly changing stockholders.... A corporation, therefore, being not a natural person, but a mere creature of the mind, invisible and intangible, cannot be a citizen of a state, or of the United States, and cannot fall within the terms or the power of the above mentioned article, and can therefore neither plead nor be impleaded in the courts of the United States." Rundle v Delaware & Raritan Canal Company 00 U.S. 00 (0000) [emphasis added]  