Not content with discussing courage, Socrates also demonstrated it on the battlefield.

While discussing philosophy in the public square, Socrates would also have been training as a hoplite, a heavily armed foot soldier that fought in the close phalanx formation. Practicing maneuvers in heavy armor would have developed his strength and agility. The pyrrhike war dance, so ancient as to have been performed by Achilles around the burning pyre of Patroclus, is described by Plato in the Laws, and involved imitating movements of attack and defense “in a direct and manly style.”

In Plato’s Apology, Socrates proudly tells the jury that, just as he did not desert his post at the battles of Potidaea, Delium, and Amphipolis for fear of dying, so he will not now abandon the life of the philosopher. The earlier of the three battles, the Battle of Potidaea, took place in 432 B.C.E., when Socrates would have been around 38 years old, suggesting that he may also have taken part in other, earlier campaigns.

Unlike predecessors such as Pythagoras and Empedocles, who had a pacifist outlook, Socrates did not particularly question warfare, which he looked upon as his patriotic duty. However, he did refuse to carry out unjust orders, and, like Jesus four centuries later, rejected the ancestral law of retaliation, stating, in the Crito, that “we ought not retaliate or render evil to anyone, whatever evil we may have suffered from him.” In the Laws, Plato goes further still, arguing that war ought only to be waged for the sake of peace.

The Battle of Potidaea

The siege of Potidaea, a city-state that had rebelled against Athens, lasted until 429. In Plato’s Symposium, Alcibiades says that Socrates singlehandedly saved his life at Potidaea, and took the hardships of the campaign “much better than anyone in the whole army.” At the same time, no one enjoyed a festival more than he did; if compelled, he could drink everyone under the table, yet no one had ever seen him drunk.

During a severe frost, he marched barefoot and, even then, outdid his shod comrades, who “looked daggers at him because he seemed to despise them.” Although Socrates had saved his life, it is Alcibiades, on account of his birth and rank, who received the prize for valour. When Alcibiades remonstrated with the generals that the prize ought to go to Socrates, he was more eager than anyone that Alcibiades should have it.

The Battle of Delium

The Battle of Delium, in Boetia, took place in 424, about five years after Potidaea, and ended in a costly defeat for Athens. In Plato’s Laches, the general Laches says that Socrates was his companion in the retreat from Delium, and that if only others could have been like him, “the honour of our country would have been upheld, and the great defeat would never have occurred.” In tribute to his valour at Delium, Laches invites Socrates to teach and contradict him as much as he likes, without regard for his superior age and rank.

During the retreat from Delium, Alcibiades, who was on horseback, chanced upon Socrates and Laches. In Plato’s Symposium, he says that, even in retreating, Socrates appeared so calm and confident and imposing that no one dared attack him or his companions, preferring instead to pursue those who had turned in headlong fight.

The Battle of Amphipolis

The Battle of Amphipolis took place in 422, two years after the Battle of Delium when Socrates would have been around 48 years old—very old for a shield-carrying hoplite. The year before, Aristophanes had staged a comedy, The Clouds, which lampooned Socrates as a subversive atheist, and it is possible that Socrates’ notoriety, especially among ordinary people, rested as much on his bravery in battle as on his more intellectual pursuits.

At Amphipolis, Athens was once again routed, but the deaths of Kleon on the Athenian side and Brasidas on the Spartan side prepared the ground for the Peace of Nicias and, for Socrates, a return to the philosophy of the street.

Socrates and Plato on Courage

In the Laches, also known as On Courage, the general Nicias concludes that courage amounts to knowledge of the fearful and hopeful in war and every other sphere and situation. Socrates says that if Nicias means that courage is knowledge of the grounds of fear and hope, then courage is very rare among men, while animals could never be called “courageous” but at most “fearless”—as ordinary language use seems to confirm. Nicias concurs, adding that the same is also true of children: “Or do you really suppose I call all children courageous, who fear nothing because they have no sense?”

Socrates next proposes to investigate the grounds of fear and hope. Fear, he says, arises from anticipated evil things, but not from evil things that have happened or that are happening; hope, in contrast, arises from anticipated good things, or, at least, anticipated non-evil things or less evil things.

But, in any field of study, there is not one science of the future, one science of the past, and one science of the present: knowledge of the past, present, and future are all the same type of knowledge. Therefore, courage is not merely knowledge of the fearful and the hopeful, but knowledge of all things, including those that are in the past and in the present. A person who had such knowledge could not be said to be lacking in courage, but neither could she be said to be lacking in any of the other virtues— justice, temperance, and piety.

Socrates points out that, in trying to define courage, he, Laches, and Nicias, have succeeded in defining virtue herself. Virtue is knowledge, which is why people with some measure of one virtue usually have a similar measure of the other virtues and of virtue in general—a thesis known as the Unity of the Virtues.

Laches and Nicias are suitably impressed, but Socrates insists that he does not as yet fully understand the nature of either courage or virtue.

In the Laches, then, Socrates defines courage as knowledge or knowledge of the good. But knowledge of the good is not enough. What we also need is the Socratic strength to persevere with our conviction through pleasures, desires, and, above all, fears. Thus, in the Republic, the mature Plato redefines courage as “the conservation of the conviction …. about fearful things.”

It’s quite a thought that, had Socrates fallen in battle, we today would be living in different minds.

Neel Burton is author of The Gang of Three: Socrates, Plato, Aristotle.

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It is striking that the great thinkers, from Aristotle to Augustine and Mencius to Montaigne, devoted so much of their time and thought to friendship, but almost none of either to marriage. Grayling’s timely treatise reacquaints us with a great but forgotten good that promises to fulfil so many of our practical, intellectual, emotional, and metaphysical needs. The book principally consists of a history of the philosophy of friendship capped by an account of canonical, often homosexual or homosocial friendships such as that of Achilles and Patroclus and Jonathan and David, who, in the Bible, describes the love of Jonathan as “better even than that of women”. Throughout, Grayling seeks to define friendship and, in so doing, explores its many forms, facets, charms, and consolations.

Perhaps in a desire to be modern, relevant, or politic, Grayling seems to reject the classical notion that, at its best and most meaningful, friendship is a highly elitist good. For the greats, only virtuous men can be ideal friends. Aristotle famously says that, while there are many ways for men to be bad, there is only one way for them to be good, and it is precisely in this sense that an ideal friend is ‘another self’—a historically important notion that Grayling severally dismisses. Because they are all one and the same, virtuous men are predictable, reliable, and therefore worthy of one another’s friendship. In contrast, bad people are in some way unlike themselves, and just as likely to hate other bad people as anyone else.

In my opinion, Plato, whom Grayling underrates, advances by far the most subtle and sophisticated of all theories of friendship, one far superior even to that of Aristotle. Despite the extravagant praise that he lavishes upon friendship, Aristotle is quite clear that the best and happiest life is not that spent in friendship, but in the contemplation of those things that are most true and therefore most beautiful and most dependable. There is a contradiction here: if the best life is a life of contemplation, then friendship is either superfluous or inimical to the best life, and therefore undeserving of the high praise that Aristotle lavishes upon it. It may be, as Aristotle tentatively suggests, that friendship is needed because it promotes contemplation, or that contemplation is only possible some of the time and friendship is needed the rest of the time, or even that a life of friendship is just as good as a life of contemplation. So much for Aristotle, one might say.

Plato’s Lysis may seem to fail in its task of defining friendship, but one should never take Plato or his mouthpiece Socrates at face value. There is far more to the Lysis than a couple of interesting but misguided thoughts on friendship. By discussing friendship with Lysis and Menexenus as he does, Socrates is not only discussing friendship, but also demonstrating to the youths that, even though they count each other as close friends, they do not really know what friendship is, and that, whatever friendship is, it is something far deeper and far more meaningful than the puerile ‘friendship’ that they share. In contrast to the youths, Socrates knows perfectly well what friendship is, and is only feigning ignorance so as to teach the youths: ‘…and I, an old boy, who would fain be one of you…’ More than that, by discussing friendship with Lysis and Menexenus as he does, Socrates is himself in the process of befriending them. He befriends them not with pleasant banter or gossipy chitchat, as most people ‘befriend’ one another, but with the kind of philosophical conversation that is the hallmark of the deepest and most meaningful of friendships. In the course of this philosophical conversation, he tells the youths that he should ‘greatly prefer a real friend to all the gold of Darius’, thereby signifying not only that he places friendship on the same high pedestal as philosophy, to which he has devoted (and will sacrifice) his life, but also that the kind of friendship that he has in mind is so rare and uncommon that even he does not possess it. If friendship ultimately escapes definition, then this is because, like philosophy, friendship is not so much a thing-in-itself as it is a process for becoming. True friends seek together to live truer, fuller lives by relating to each other authentically and by teaching each other about the limitations of their beliefs and the defects in their character, which are a far greater source of error than mere rational confusion. For Plato, friendship and philosophy are aspects of one and the same impulse, one and the same love: the love that seeks to know.

Just as philosophy leads to friendship, so friendship leads to philosophy. In the Phaedrus, Plato’s most important work on friendship (although not generally recognized as such—Grayling fails to mention it), Socrates and Phaedrus go out into the idyllic countryside just outside Athens and have a long conversation about the anatomy of the soul, the nature of true love, the art of persuasion, and the merits of the spoken over the written word. At the end of this conversation, Socrates offers a prayer to the local deities. This is the famous Socratic Prayer, which is notable both in itself and for the response that it elicits from Phaedrus.

Socrates: Beloved Pan, and all ye other gods who haunt this place, give me beauty in the inward soul; and may the outward and inward man be at one. May I reckon the wise to be the wealthy, and may I have such a quantity of gold as a temperate man and he only can bear and carry. —Anything more? The prayer, I think, is enough for me.

Phaedrus: Ask the same for me, for friends should have all things in common.

Plato may fail to define friendship in the Lysis, but in the Phaedrus he gives us its living embodiment. Socrates and Phaedrus spend their time together enjoying the beautiful Attic countryside while engaging in honest and open philosophical conversation. By exercising and building upon reason, they are not only furthering each other’s understanding, but also transforming a life of friendship into a life of joint contemplation of those things that are most true and hence most beautiful and most dependable. If only on the basis of his response to the Socratic Prayer, it is obvious that Phaedrus is another self to Socrates, since he makes the same choices as Socrates and even justifies making those choices on the grounds that their friendship requires it. Whereas Aristotle and Grayling try to tell us what friendship is, Plato lets us feel it in all its allure and transformative power.