Philosophers call this state of isolation and disconnection “species loneliness” — a deep, unnamed sadness stemming from estrangement from the rest of Creation, from the loss of relationship. As our human dominance of the world has grown, we have become more isolated, more lonely when we can no longer call out to our neighbors. It’s no wonder that naming was the first job the Creator gave Nanabozho.

Solitude—the feeling and knowledge that one is alone, alienated from the world and oneself—is not an exclusively Mexican characteristic. All men, at some moment in their lives, feel themselves to be alone. And they are. To live is to be separated from what we were in order to approach what we are going to be in the mysterious future. Solitude is the profoundest fact of the human condition. Man is the only being who knows he is alone, and the only one who seeks out another. His nature—if that word can be used in reference to man, who has "invented" himself by saying "No" to nature—consists in his longing to realize himself in another. Man is nostalgia and a search for communion. Therefore, when he is aware of himself he is aware of his lack of another, that is, of his solitude.

The great solitude of the individual is a hallmark of our times.

In the late twentieth century we consider solitude our natural condition. Mates divorce, and even friendship is diagnosed as a disorder - co-dependency. So the concept of living a life interlocked with another human is unthinkable

In our hearts... there must abide some pity for those people who have always felt themselves to be separate from even their most familiar surroundings, those people who either are foreigners or who suffer a singular point of view that makes them feel as if they’re foreigners - even in their native lands. In our hearts... there also abides a certain suspicion that such people need to feel set apart from their society. But people who initiate loneliness are no less lonely than those who are suddenly surprised by loneliness, nor are they undeserving of our pity.

Loneliness is the leprosy of the modern world.

Solitude in the city is about the lack of other people or rather their distance beyond a door or wall, but in remote places it isn’t an absence but the presence of something else, a kind of humming silence in which solitude seems as natural to your species as to any other, words strange rocks you may or may not turn over.

that modern culture is suffering an epidemic of alienation, yet so many of us feel alone in our unbelonging, as if everyone else was inside of the thing that we alone are outside of. And keeping silent about our experience of estrangement is, in large part, what allows it to perpetuate.

"What is it that drew us to the hollow tonight? What crazy kind of species is it that leaves a warm home on a rainy night to ferry salamanders across a road? It's tempting to call it altruism, but it's not. There is nothing selfless about it. This night heaps rewards on the givers as well as the recipients. We get to be there, to witness this amazing rite, and, for an evening, to enter into relationship with other beings, as different from ourselves as we can imagine.
It has been said that people of the modern world suffer a great sadness, a "species loneliness" - estrangement from the rest of Creation. We have built this isolation with our fear, with our arrogance, and with our homes brightly lit against the night. For a moment as we walked this road, those barriers dissolved and we began to relieve the loneliness and know each other once again."

How lonely we are in the world; how selfish and secret, everybody!

Modern life alienates us from Nature, even our own.

Individuals of the earlier species had suffered from an almost insurmountable spiritual isolation from one another. Not even lovers, and scarcely even the geniuses with special insight into personality, ever had anything like accurate vision of one another.

Man ordinarily lives in loneliness. To avoid loneliness, he creates all kinds of relationships, friendships, organizations, political parties, religions and what not. But the basic thing is that he is very much afraid of being lonely. Loneliness is a black hole, a darkness, a frightening negative state almost like death … as if you are being swallowed by death itself. To avoid it, you run out and fall into anybody, just to hold somebody’s hand, to feel that you are not lonely… Nothing hurts more than loneliness.
But the trouble is, any relationship that arises out of the fear of being lonely is not going to be a blissful experience, because the other is also joining you out of fear. You both call it love. You are both deceiving yourself and the other. It is simply fear, and fear can never be the source of love. Only those who love are absolutely fearless; only those who love are able to be alone, joyously, whose need for the other has disappeared, who are sufficient unto themselves…

The day you decide that all these efforts are failures, that your loneliness has remained untouched by all your efforts, that is a great moment of understanding. Then only one thing remains: to see whether loneliness is such a thing that you should be afraid of, or if it is just your nature. Then rather than running out and away, you close your eyes and go in. Suddenly the night is over, and a new dawn … The loneliness transforms into aloneness.

Aloneness is your nature. You were born alone, you will die alone. And you are living alone without understanding it, without being fully aware of it. You misunderstand aloneness as loneliness; it is simply a misunderstanding. You are sufficient unto yourself.

For everyone strives to keep his individuality as apart as possible, wishes to secure the greatest possible fullness of life for himself; but meantime all his efforts result not in attaining fullness of life but self-destruction, for instead of self-realisation he ends by arriving at complete solitude. All mankind in our age have split up into units, they all keep apart, each in his own groove; each one holds aloof, hides himself and hides what he has, from the rest, and he ends by being repelled by others and repelling them. He heaps up riches by himself and thinks, ‘How strong I am now and how secure,’ and in his madness he does not understand that the more he heaps up, the more he sinks into self-destructive impotence. For he is accustomed to rely upon himself alone and to cut himself off from the whole; he has trained himself not to believe in the help of others, in men and in humanity, and only trembles for fear he should lose his money and the privileges that he has won for himself. Everywhere in these days men have, in their mockery, ceased to understand that the true security is to be found in social solidarity rather than in isolated individual effort. But this terrible individualism must inevitably have an end, and all will suddenly understand how unnaturally they are separated from one another. It will be the spirit of the time, and people will marvel that they have sat so long in darkness without seeing the light.