> N: the 7 deadly sins are: pride, wrath, anger, gluttony, envy, sloth,
and (I am sorry to say) lust.
> Here is St. Thomas on the question you posed: Whether hypocrisy is
always a mortal sin?
<...........>
> I answer that, There are two things in hypocrisy, lack of holiness, and
simulation thereof. Accordingly if by a hypocrite we mean a person whose
intention is directed to both the above, one, namely, who cares not to be
holy but only to appear so, in which sense Sacred Scripture is wont to use
the term, it is evident that hypocrisy is a mortal sin: for no one is
entirely deprived of holiness save through mortal sin. But if by a
hypocrite we mean one who intends to simulate holiness, which he lacks
through mortal sin, then, although he is in mortal sin, whereby he is
deprived of holiness, yet, in his case, the dissimulation itself is not
always a mortal sin, but sometimes a venial sin. This will depend on the
end in view; for if this be contrary to the love of God or of his
neighbor, it will be a mortal sin: for instance if he were to simulate
holiness in order to disseminate false doctrine, or that he may obtain
ecclesiastical preferment, though unworthy, or that he may obtain any
temporal good in which he fixes his end. If, however, the end intended be
not contrary to charity, it will be a venial sin, as for instance when a
man takes pleasure in the pretense itself: of such a man it is said in
Ethic. iv, 7 that "he would seem to be vain rather than evil"; for the
same applies to simulation as to a lie.
> It happens also sometimes that a man simulates the perfection of
holiness which is not necessary for spiritual welfare. Simulation of this
kind is neither a mortal sin always, nor is it always associated with
mortal sin.
> This suffices for the Replies to the Objections.
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"[O]ne can simulate, and, through rote computing power, gain insight into models with no analytical solution. Thus, computers and simulation are the foundation of the complexity approach." [David Colander "Complexity and the History of Economic Thought"]