I presume there’s nothing pleasurable in taking part in war, and it could only be if there was some level of sociopathy/psychopathy, but perhaps I’m not seeing something.
Yes this is the place where I think we have to begin. I think the difference here stems from too narrow a definition of "pleasure" -- in my view of Epicurus' teaching, pleasure is EVERYTHING that we find to be desirable, including our attachment to our friends and our family and our "country" and innumerable other things. I think it is dangerous to narrow the definition at all beyond "what we feel to be desirable" and that means that certainly mental constructs and abstractions are pleasurable and desirable too. Remember, the Epicureans held that mental pains and pleasures can be / often are more intense than "physical" ones. We don't have much problem seeing that in terms of visual art and music and dancing, but it also extends to literature and to any and all other forms of abstractions as well. So in sum for this paragraph, I would say that Epicurus was not in any way at war with "abstractions" or with "logic" in general - he was at war with misuse of them for goals other than pleasure, at war with setting them up as ends in themselves, or as mechanisms that supercede feeling.
So absolutely I think that a person can employ Epicurean philosophy not only to die for a friend, as Epicurus specifically included, but also to die for any number of things if we find our value (our pleasure) to be deep enough in that objective.
I would cite two texts in support of this:
First, remember what Torquatus had to say about his ancestors and the way they acted in war:
Quote"But in certain emergencies and owing to the claims of duty or the obligations of business it will frequently occur that pleasures have to be repudiated and annoyances accepted. The wise man therefore always holds in these matters to this principle of selection: he rejects pleasures to secure other greater pleasures, or else he endures pains to avoid worse pains.
This being the theory I hold, why need I be afraid of not being able to reconcile it with the case of the Torquati my ancestors? Your references to them just now were historically correct, and also showed your kind and friendly feeling towards myself; but the same I am not to be bribed by your flattery of my family, and you will not find me a less resolute opponent. Tell me, pray, what explanation do you put upon their actions? Do you really believe that they charged an armed enemy, or treated their children, their own flesh and blood, so cruelly, without a thought for their own interest or advantage? Why, even wild animals do not act in that way; they do not run amok so blindly that we cannot discern any purpose in their movements and their onslaughts.
Can you then suppose that those heroic men performed their famous deeds without any motive at all? What their motive was, I will consider later on: for the present I will confidently assert, that if they had a motive for those undoubtedly glorious exploits, that motive was not a love of virtue in and for itself.—He wrested the necklet from his foe.—Yes, and saved himself from death. But he braved great danger.—Yes, before the eyes of an army.—What did he get by it?—Honor and esteem, the strongest guarantees of security in life.—He sentenced his own son to death.—If from no motive, I am sorry to be the descendant of anyone so savage and inhuman; but if his purpose was by inflicting pain upon himself to establish his authority as a commander, and to tighten the reins of discipline during a very serious war by holding over his army the fear of punishment, then his action aimed at ensuring the safety of his fellow citizens, upon which he knew his own depended.
And this is a principle of wide application. People of your school, and especially yourself, who are so diligent a student of history, have found a favorite field for the display of your eloquence in recalling the stories of brave and famous men of old, and in praising their actions, not on utilitarian grounds, but on account of the splendor of abstract moral worth. But all of this falls to the ground if the principle of selection that I have just mentioned be established,—the principle of forgoing pleasures for the purpose of getting greater pleasures, and enduring, pains for the sake of escaping greater pains.
And I think this issue shows up even better in the correspondence of Cassius and Cicero, which I've included and referenced here, but I want to include some particularly apt parts here, especially Cassius' reply below showing that Cassius saw himself in specifically Epicurean terms:
QuoteDisplay MoreCassius had recently become a follower of the Epicurean school of philosophy.
[15.16] Cicero to Cassius
[Rome, January, 45 B.C.]
L I expect you must be just a little ashamed of yourself now that this is the third letter that has caught you before you have sent me a single leaf or even a line. But I am not pressing you, for I shall look forward to, or rather insist upon, a longer letter. As for myself, if I always had somebody to trust with them, I should send you as many as three an hour. For it somehow happens, that whenever I write anything to you, you seem to be at my very elbow; and that, not by way of visions of images, as your new friends term them, who believe that even mental visions are conjured up by what Catius calls spectres (for let me remind you that Catius the Insubrian, an Epicurean, who died lately, gives the name of spectres to what the famous Gargettian [Epicurus], and long before that Democritus, called images).
2 But, even supposing that the eye can be struck by these spectres because they run up against it quite of their own accord, how the mind can be so struck is more than I can see. It will be your duty to explain to me, when you arrive here safe and sound, whether the spectre of you is at my command to come up as soon as the whim has taken me to think about you - and not only about you, who always occupy my inmost heart, but suppose I begin thinking about the Isle of Britain, will the image of that wing its way to my consciousness?
3 But of this later on. I am only sounding you now to see in what spirit you take it. For if you are angry and annoyed, I shall have more to say, and shall insist upon your being reinstated in that school of philosophy, out of which you have been ousted "by violence and an armed force." In this formula the words "within this year" are not usually added; so even if it is now two or three years since, bewitched by the blandishments of Pleasure, you sent a notice of divorce to Virtue, I am free to act as I like. And yet to whom am I talking? To you, the most gallant gentleman in the world, who, ever since you set foot in the forum, have done nothing but what bears every mark of the most impressive distinction. Why, in that very school you have selected I apprehend there is more vitality than I should have supposed, if only because it has your approval. "How did the whole subject occur to you ?" you will say. Because I had nothing else to write. About politics I can write nothing, for I do not care to write what I feel.
[15.19] Cassius to Cicero
[Brundisium, latter half of January, 45 B.C.]
L I hope that you are well. I assure you that on this tour of mine there is nothing that gives me more pleasure to do than to write to you; for I seem to be talking and joking with you face to face. And yet that does not come to pass because of those spectres; and, by way of retaliation for that, in my next letter I shall let loose upon you such a rabble of Stoic boors that you will proclaim Catius a true-born Athenian.
2 I am glad that our friend Pansa was sped on his way by universal goodwill when he left the city in military uniform, and that not only on my own account, but also, most assuredly, on that of all our friends. For I hope that men generally will come to understand how much all the world hates cruelty, and how much it loves integrity and clemency, and that the blessings most eagerly sought and coveted by the bad ultimately find their way to the good. For it is hard to convince men that "the good is to be chosen for its own sake"; but that pleasure and tranquillity of mind is acquired by virtue, justice, and the good is both true and demonstrable. Why, Epicurus himself, from whom all the Catiuses and Amafiniuses in the world, incompetent translators of terms as they are, derive their origin, lays it down that "to live a life of pleasure is impossible without living a life of virtue and justice".
3 Consequently Pansa, who follows pleasure, keeps his hold on virtue, and those also whom you call pleasure-lovers are lovers of what is good and lovers of justice, and cultivate and keep all the virtues. And so Sulla, whose judgment we ought to accept, when he saw that the philosophers were at sixes and sevens, did not investigate the nature of the good, but bought up all the goods there were; and I frankly confess that I bore his death without flinching. Caesar, however, will not let us feel his loss too long; for he has a lot of condemned men to restore to us in his stead, nor will he himself feel the lack of someone to bid at his auctions when once he has cast his eye on Sulla junior.
In the end the argument goes in the direction Torquatus points -- Epicurean philosophy can be used to justify leading a war, or even executing your own son, in appropriate circumstances. If we think that there are any absolute bright lines at all then we're forgetting the basic premises of the Epicurean system. It is only the circumstances and events and the "feeling" of the individuals involved at the particular time and place that can provide us answers on how to live.
Also I want to add that I think this statement from Cicero is highly relevant:
Quote
...In this formula the words "within this year" are not usually added; so even if it is now two or three years since, bewitched by the blandishments of Pleasure, you sent a notice of divorce to Virtue, I am free to act as I like. And yet to whom am I talking? To you, the most gallant gentleman in the world, who, ever since you set foot in the forum, have done nothing but what bears every mark of the most impressive distinction. Why, in that very school you have selected I apprehend there is more vitality than I should have supposed, if only because it has your approval.And I think that is relevant because it is the mistake that many people make, to underestimate the power of feeling to serve as the guide of life. As a result they make the mistake of underestimating the "vitality" of the school of Epicurean philosophy, because they put aside feeling when they should realize that feeling is in fact the center of everything that makes life worthwhile.
But this is a logical mistake to make if someone thinks that "painlessness" or "absence of pain" or even "immediate bodily pleasure" is the goal of Epicurean philosophy. I think Epicurus was very clear from his deeds and words that such asserts are dramatic misunderstandings, but they will recur so long as people talk about Epicurus in these terms instead of diving deeper into the text to see the underlying role of feeling as the true guide of life rather than virtue/ being good / being holy / being reasonable etc.