One nation is to another what one individual is to another; with this melancholy distinction perhaps, that the former with fewer of the benevolent emotions than the latter, are under fewer restraints also from taking undue advantage of the indiscretions of each other.

What is government itself but the greatest of all reflections on human nature?

[I]n the next place, to show that unless these departments be so far connected and blended as to give to each a constitutional control over the others, the degree of separation which the maxim requires, as essential to a free government, can never in practice be duly maintained.

Knowledge will forever govern ignorance; and a people who mean to be their own governors must arm themselves with the power which knowledge gives.

It is proper to take alarm at the first experiment on our liberties. We hold this prudent jealousy to be the first duty of citizens and one of the noblest characteristics of the late Revolution. The freemen of America did not wait till usurped power had strengthened itself by exercise and entangled the question in precedents. They saw all the consequences in the principle, and they avoided the consequences by denying the principle. We revere this lesson too much ... to forget it

The civil Government, though bereft of every thing like an associated hierarchy, possesses the requisite stability, and performs its functions with complete success; whilst the number, the industry, and the morality of the Priesthood, and the devotion of the people, have been manifestly increased by the total separation of the church from the State.

Is there a Legislative power in fact, not expressly prohibited by the Constitution, which might not, according to the doctrine of the Court, be exercised as a means of carrying into effect some specified Power?