Thomas Aquinas

“ Now that which is contrary to reason has more the character of an evil, than that which takes away the use of reason for a time, since the use of reason, which is taken away by drunkenness, may be either good or evil, whereas the goods of virtue, which are taken away by things that are contrary to reason, are always good. ”

“ Thirdly, it may happen that a man is well aware that the drink is immoderate and intoxicating, and yet he would rather be drunk than abstain from drink. Such a man is a drunkard properly speaking, because morals take their species not from things that occur accidentally and beside the intention, but from that which is directly intended. In this way drunkenness is a mortal sin, because then a man willingly and knowingly deprives himself of the use of reason, whereby he performs virtuous deeds and avoids sin, and thus he sins mortally by running the risk of falling into sin. ”

“ Assiduity makes drunkenness a mortal sin, not on account of the mere repetition of the act, but because it is impossible for a man to become drunk assiduously, without exposing himself to drunkenness knowingly and willingly, since he has many times experienced the strength of wine and his own liability to drunkenness. ”

“ Further, whoever causes another to sin, sins himself. Therefore, if drunkenness were a sin, it would follow that it is a sin to ask a man to drink that which makes him drunk, which would seem very hard. ”

“ Even as he that is drunk is excused if he knows not the strength of the wine, so too is he that invites another to drink excused from sin, if he be unaware that the drinker is the kind of person to be made drunk by the drink offered. But if ignorance be lacking neither is excused from sin. ”

“ Man is most prone to sins of intemperance, because such like concupiscences and pleasures are connatural to us, and for this reason these sins are said to find greatest favor with the devil, not for being graver than other sins, but because they occur more frequently among men. ”

“ In this way when a man eats or drinks much at the physician's advice in order to provoke vomiting, he is not to be deemed to have taken excessive meat or drink. There is, however, no need for intoxicating drink in order to procure vomiting, since this is caused by drinking lukewarm water: wherefore this is no sufficient cause for excusing a man from drunkenness. ”

“ Wherefore, just as it happens sometimes that the meat and drink which are moderate for a healthy man are immoderate for a sick man, so too it may happen conversely, that what is excessive for a healthy man is moderate for one that is ailing. ”

“ In this, as Aristotle observes (Polit. ii, 9) , "he seems to have considered the advantage," namely of the prevention of wrong, "rather than the leniency which one should have for drunkards," seeing that they are not in possession of their faculties. ”