Consider a swarm of bees, a flock of birds, a school of fish, and a colony of ants. The common observer would just see them as they are - a swarm, a flock, and a colony. Yet looking with a new set of eyes, one would see that the whole is greater than the sum of its parts. The conglomeration of such basic parts give rise to another holistic entity. This is a phenomenon called emergence that occurs due to complex interactions between simpler constituents. In essence, the ant colony itself is an emergent organism. The mind is emergent from the electrochemical interaction of neurons. As mentioned by the uncanny professor of the X-Men: "The mind is not like a box that you open up...rather it is like a beehive.." Indeed, the mind is the buzz-word in this article.

Your name is a reference to your existential self, it points to your "I". A person who survives from a serious head-injury and awakens with amnesia would often immediately ask "Who am I?" or "What is my name?" An ego-surfer would often google his name to check on his web-identity. But what is the "self" that searches for an identity? What is the mind that seeks it's own "life"?
Psychology has analysed that the mind is comprised of many components entwined and interacting altogether. In the field of Artificial Intelligence, Marvin Minsky has posited a "Society of Minds" theory. To me, this somehow connects with the property of a mind as some kind of "legion". A Legion is a military unit in ancient days, composed of thousands of Roman soldiers. Hence it was the name used by the demon-possessed man to refer to the false "self" inhabiting his mind - the entity that has often driven him to the wilderness.
Now in our world of countless movements, corporate marketing schemes, ideologies, idiosyncracies, beliefs, opinions, doctrines, and worldviews competing to grab hold of our thoughts, time, effort, and money, it all often brings people to a dizzying state of confusion that is akin to a proverbial wilderness. I'm reminded of memes - information residing in our mind that influences the way we think, act or do. Memes coupled with the analogy of the Legion leads to a scary question : Is there a legion in my mind ? We need to identify twisted mindsets and ideologies that consume the masses. We need to check false beliefs that could possess us all.
The meme is a term coined by Richard Dawkins to denote information that transfers from mind to mind. In general, the concept of the meme has no intrinsic moral attributes, like the internet. However, there are good memes, and there are bad ones, like how there are good and bad websites. Let's take a look at this particular meme that has gained so much notoriety in history that it has become the prime example of a "virus of the mind". It's name is Religion.
As we look around, the legion has re-surfaced, or re-emerged : The "re-legion" of man is an ominous pun for religion that has gained infamy for causing man to commit horrifying acts in history. And looking closer, we can find that it is not solely man that is responsible for these major atrocities alone, but more of an unseen power, much deadlier than we can ever realize (Eph. 6:12). Mankind's biggest blunders are manifestations of a "viru-legion" that corrupts man and his deep-seated beliefs, giving rise to religion - the perversion of faith, as Bono would call it.
A virus enters and destroys it's host. And just like how the virulent legion behaved in Luke 8:33, as it "entered the swine, and the herd ran into the lake and drowned", we see the same pattern in cults that herded their members to drink poison, or smash planes into buildings, or blow themselves up among crowds. And how do we know that we ourselves are immune from legions ? There may be subtle mind viruses that have infected us already, and social viruses that continue to inoculate us on a daily basis. (That is the reason why you are highly encouraged to introspect rigorously everything that you read - including this article !) Through some kind of Trojan Horse, seeds of virulent ideas enter our minds unnoticed, they settle in as seemingly innocent knowledge, and then they form our worldviews, or corrupt existing ones. We never dare, or bother to check them, and then we slowly drown.
This is the tricky part about knowing : often we do not know that we dont know. But more often is that we do not know that we know !

Through some kind of Trojan Horse, ideas enter our minds unnoticed, and form our worldviews that we never dare, or bother, to check

We are unaware of our ignorance, and ignorant of being unaware. With the human mind having a limited capacity to store information within a limited timespan, how do we escape such a trap? If knowing some things and not knowing some other things renders us victims to the onslaught of disinformation, misinformation, hoaxes, conspiracy theories and propaganda, how will we ever know what is true and what is not? It is of these things that the young generation of our age does not know anymore what to believe. With a vulnerable mind, they are then led to believe things they dont really know at a deep level. And there goes the problem cycle. If there is any way at all to break free from this chain, we could explore the solution upon three grounds - the mind, heart and spirit.
It starts on the battlefield of information within the mind, the mental scape of the populace. Informing the masses about the reality of malignant memes brings awareness that can help people recognize and cope with mind-viruses before it infects them. Knowing is half the battle, and prevention is the cure. Teach people how to recognize the many identifiable differences between memes of truth and memes of lies. One of them can be discerned readily : A meme of truth openly asks the host to examine and test it, thereby performing a kind of error-correction mechanism upon itself. These verses - Jn. 20:27, 2 Cor. 13:5, and 1 Thes. 5:21 - are examples of memes that employ self-evaluation, and are at ease to die off if found to be defective. Scientific theories that subject themselves to the Scientific Method are always prepared to be scrapped as it declares that it should be testable and falsifiable - it asks to be tested through careful and unbiased examinations. These types of memes persist by virtue of the sheer force of its commitment to objective truth.
On the contrary, false memes attempt to hideously conceal, suppress or exterminate anything that challenges their "authority", they are desperate to replicate (Lk. 8:31-33), violently chaotic, and utterly destructive. One or more of these characteristics show up in cults tainted with religious legalism, or in tyrannical and corrupt governments.
Viruses usually result from the mutation of good things. In much the same way that lucifer mutated from a good angel, or that Adam fell from being "good". An evangelist's mis-interpretation of a set of verses may give rise to mutant doctrines of error (and possibly another cult). But a minister interpreting verses for certain motives, such as using it intentionally to spread guilt or fear to manipulate people for selfish gains, is as deadly as how man uses religion for political motives. This takes us to the heart of man - the source of perennial problems, therefore another focal point for change and transformation. In the vast sea of information and questionable knowledge, the human mind cannot navigate on its own. Sheer intellect alone is not enough. The mind needs a pure heart to guide it to righteousness. The righteous heart begins with a deep longing for itself to be pure (Ps. 51:10). Continuously seeking truth. It takes a sincere heart to introspect one's belief, a humble heart to break free from judgemental biases, a brave heart to question and examine teachings (and then to let go of what is false), a vigilant heart to filter the media diet that feeds the mind, a pure heart to check inner motives, and a prayerful heart to be able to discern truth from lies.
The universe teems with ones and zeros, and abounds with good and bad, light and darkness, truth and lies. And the contrast between them can be seen with the eyes of a right kind of heart. Because a heart that truly seeks, finds absolute Truth (Jer. 29:13, Matt 7:7, Luke 11:9). And so longing for it persistently will develop that God-given spiritual receptivity that A.W. Tozer mentions, and one will surely recognize Truth (John 10:3).
But if all else fails, as it often does with the deceitful heart of man (Jer. 13:9) we therefore come to the last solution : the Spirit of Truth - the only agent that dispel all lies (John 16:13). Invisible, yet it pervades the cosmos whether we perceive it or not. It is here and now.
The "legion" and all it's manifestations: virus, sin, and death, are all subject to a Supreme Force that is far beyond what we could ever see.

" Truth is anti-virus. "

Of this Sovereign mystery, I can explain nothing more, except to testify to the wonderful things that the Truth has done for my life, as it continues to free me from the bondage of superstition, the chains of false beliefs, and the shackles of bad religion. Truth is anti-virus. Before, there was a legion in my mind, now there is the spirit of Truth that heals me, day by day.

"...they found the man, out of whom the devils were departed, sitting at the feet of Jesus, clothed, and in his right mind"
       Luke 8:35

Is it any wonder why I now uphold Truth and sit at His feet? I see absolute Truth as the foundation of the universe, and the core of my very being. Truth is the treasure worth pouring my heart into (Mt. 6:21), for it is where one's true self and real identity can be found. Man will forever remain restless unless he finds his true being. Purpose, meaning, and significance will then be an endless journey - man can never truly come home to his place in this vast universe.
But once Truth gives us the right answer to His question, "What is your name?", only then can we say our real name with our true self and real identity. Only then can man come home.

"Return home and tell how much God has done for you.So the man went away and told all over town how much Jesus had done for him."
       Luke 8:39