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After listing the numerous powers granted to Congress by the Constitution the author says:
My object is to consider that undefined, unbounded and immense power which is comprised in the following clause: “And to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the United States; or in any department or offices thereof.” Under such a clause as this, can anything be said to be reserved and kept back from Congress? ...
In giving such immense, such unlimited powers, was there no necessity of a Bill of Rights, to secure to the people their liberties? Is it not evident that we are left wholly dependent on the wisdom and virtue of the men who shall from time to time be the members of Congress? And who shall be able to say seven years hence, the members of Congress will be wise and good men, or of the contrary character?
Answer:
The author uses the words "undefined", "unbounded" and "immense" to describe the powers of the constitution.
Explanation:
For the author, the constitution is highly powerful, since it has the capacity to possess immense, unlimited and indefinite power. This is a concern for the population of the country, because nothing guarantees that all this relevance will not be used for evil.
The power of the constitution is managed by those who administer it, the congressmen. No one guarantees that the members of the Congress are and will be just and good people, who will use all the power of the constitution for good.