their very nature, cannot be left to each individual to do, or not to
do, as he may choose, or to do in his own way. First of all, there is
the necessity of some means by which the weak may be protected from the
strong. The individual must be protected in his life and liberty, and
there must be some guarantee to him, that if he is industrious the
enjoyment of the product of his labor will be secured to him. Human
nature being imperfect, disputes and injustice are sure to arise. Hence
comes the necessity of some power above the citizens and able to command
their obedience, some power that can administer justice according to the
rights and not according to the strength of individuals.

To thus control the actions of individuals, this power above the
citizens, this government, must possess functions of three kinds. First,
legislative power, or power to declare the rules of conduct to which the
citizen must conform; second, judicial power, or power to interpret and
declare the true meaning of these rules, and to apply them to the
particular cases that may arise; and third, the executive power, or
power to carry into execution these laws, and to enforce the obedience
of the citizens.

To the student nothing could be more interesting and instructive, than
to trace how, as tribes and nations have progressed in civilization,
government has advanced in its development. How, as men have progressed,
first from the condition of savage hunters to the roving feeders of
flocks, then to tillers of the soil with fixed places of abode, and
finally to builders of cities teeming with trade, commerce and
manufactures; how as men have thus improved in civilization and material
well-being, their mutual duties and common interests have become more
and more important and numerous, and government as controlling these
interests and duties, has developed in form and improved in structure