Anselm and Aquinas

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Anselm and Aquinas

Although born in Alpine Italy and educated in Normandy, Anselm became a

Benedictine monk, teacher, and abbot at Bec and continued his ecclesiastical
career in England. Having been appointed the second Norman archbishop of

Canterbury in 1093, Anselm secured the Westminster Agreement of 1107,
guaranteeing the (partial) independence of the church from the civil state. In a
series of short works such as De Libertate Arbitrii (On Free Will), De Casu

Diaboli (The Fall of the Devil), and Cur Deus Homo (Why God became Man), Anselm
propounded a satisfaction theory of the atonement and defended a theology like

Augustines', that emphasized the methodological priority of faith over reason,
since truth is to be achieved only through "faith seeking
understanding". Anselm's combination of Christianity, neoplatonic
metaphysics, and Aristotelean logic in the form of dialectical
question-and-answer was an important influence in the development of later
scholasticism. As a philosopher, Anselm is most often remembered for his
attempts to prove the existence of god: In De Veritate (Of Truth) he argued that
all creatures owe their being and value to god as the source of all truth, to
whom a life lived well is the highest praise. In the Monologion he described
deity as the one good thing from which all real moral values derive, whose
existence is required by the reality of those values. Most famously, in the

Proslogion (Addition), Anselm proposed the famous Ontological Argument,
according to which god is understood as "that than which nothing greater
can be conceived". Such a being, he argued, must necessarily exist in
reality as well as in thought, since otherwise it would in fact be possible to
conceive something greater--something exactly similar except for its existence.

Thus, at least for Anselmian believers guided by a prior faith, god must truly
exist as the simple, unified source of all perfections, which excludes
corruption, imperfection, and deception of eve. Reflecting on the text of Psalm

14 ("Fools say in their hearts, 'There is no god.'") in his Proslogion,

Anselm proposed a proof of divine reality that has come to be known as the

Ontological Argument. The argument takes the Psalmist quite literally by
supposing that in virtue of the content of the concept of god there is a
contradiction involved in the denial of god's existence. Anselm supposes that in
order to affirm or deny anything about god, we must first form in our minds the
appropriate concept, namely the concept of "that than which nothing greater
can be conceived". Having done so, we have in mind the idea of god. But of
course nothing about reality usually follows from what we have in mind, since we
often think about things that do not (or even cannot) actually exist. In the
case of this special concept, however, Anselm argued that what we could think of
must in fact exist independently of our thinking of it. Suppose the alternative:
if that than which nothing greater can be conceived existed only in my mind and
not in reality, then I could easily think of something else which would in fact
be greater than this (namely, the same thing existing in reality as well as in
my mind), so that what I originally contemplated turns out not in fact to be
that than which nothing greater can be conceived. Since this is a contradiction,
only a fool would believe it. So that than which nothing greater can be
conceived (that is, god) must exist in reality as well as in the mind. Born to
an aristocratic family living near Naples, Italy, Thomas Aquinas joined the

Dominican order and studied philosophy and theology in Naples, Paris, and Köln,
where he was exposed to Aristotelean thought by Albert the Great and William of

Moerbeke. During the rest of his life, he taught at Paris and Rome, writing
millions of words on philosophical and theological issues and earning his
reputation among the scholastics as "the angelic doctor." Aquinas
developed in massive detail a synthesis of Christianity and Aristotelian
philosophy that became the official doctrine of Roman Catholic theology in 1879.

De Ente et Essentia (On Being and Essence) includes a basic statement of

Aquinas's philosophical positions. His literary activity stopped abruptly as the
result of a religious experience a few months before his death. Although he
wrote many commentaries on the works of Aristotle and a comprehensive Summa de

Veritate Catholicae Fidei contra Gentiles (Summa) Contra Gentiles) (1259-1264),

Aquinas's unfinished Summa Theologica (1265-1273) represents the most complete
statement of his philosophical system. The sections of greatest interest for
survey courses include his

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