St. Thomas
Aquinas (1225-74: canonised in1323) was the most
famous of the mediaeval catholic philosophers.
He came from an Italian noble family; became a
Dominican friar (against the wishes of his father); studied in Paris; taught
& wrote extensively. Greatly admired Aristotle, and his grand overall
scheme was to reconcile Aristotle with Christianity. His books are therefore
full of quotations from the Bible and from Augustine & the other Christian
Fathers, as well as from Aristotle & any of the other Greek & Roman
books which had survived; all treated rather uncritically.
Aquinas followed Aristotle in his division
of types of government as monarchy/ tyranny, aristocracy/ oligarchy etc, but
with important changes. Thus, he defined a monarch as a ruler who holds power
legitimately and governs justly, whereas a tyrant holds power by violence and
governs unjustly; hence, there can never be a bad monarch or a good tyrant. He
saw monarchy as the best form of government and tyranny the worst. Because men
in power were likely to quarrel, causing divided counsels, it follows that
aristocracy is less good than monarchy and oligarchy less bad than tyranny.
Using Augustine and other authorities,
Aquinas attempted to set the parameters for a “just war”. It must be waged by a
legitimate authority, it must be in a just cause, such as self-defence or to
right an obvious wrong, and it must be conducted without unnecessary suffering,
especially to non-combatants. He argued that too much violence can invalidate
even a just war, and warned monarchs that military glory should not be their
principal aim.
Aquinas’s
most important contribution to political thought was the idea of Natural Law; a
complex idea. He divided law into three categories: God’s law governs the world
and is by definition always right: Human law; the laws which governments enact,
and which may be just or unjust; and in between these in Natural Law. This is
the human perception of God’s law; a universal code of right and wrong, by
which human laws should be judged. But, as a consequence of the so-called "Reniassance of the 12th century, educated man like Aquinas became acquained with the world of the ancient Greeks and Romans, and also of Islamic ideas, and he was aware that these pagans had a code of right and wrong similar to
ours. How could this be possible? Aquinas was driven to a radical conclusion: although only Christians can have full knowledge of God’s law, God in his mercy has enabled us to discover Natural Law reason alone.
Aquinas proceeded to postulate, under Natural Law, much of what nowadays would be covered
by the concept of human rights. Thus, he would argue, it cannot possibly be in
accordance with Natural Law that innocent people should be punished for crimes
that they had not committed, whereas on the other hand Natural Law surely says
that we should be entitled to enjoy the fruits of our labour. Under Natural
Law, all things should be held in common for the benefit of all; private
property, especially of land, is purely a matter of human law. Slavery too has no foundation in Natural Law.
This leads him to some interesting conclusions, especially concerning
resistance to oppressive and unjust governments.
Natural Law
has been debated ever since. John Locke, who in the 17th century
first postulated the concept of Human Rights, derives them from Natural Law,
and the American Declaration of Independence speaks of men as being “endowed by
their Creator with certain unalienable rights”. The most famous example of
Natural Law at work in the 20th century came in the trials of the
Nazi leaders, where it was laid down that obeying the orders of the government
was no defence for evil deeds. Whenever we say that a regulation is “unfair” or
“unjust” we are postulating some concept of Natural Law!