Solitude vs. Loneliness

Language... has created the word "loneliness"
to express the pain of being alone.
And it has created the word "solitude"
to express the glory of being alone.
- Paul Tillich

I have never found a companion that was so companionable as solitude.
We are for the most part more lonely when we go abroad among men
than when we stay in our chambers.
- Henry David Thoreau

When you are lonely you are thinking of the other,
you are missing the other.
Loneliness is a negative state...
Aloneness is the presence of oneself.
Aloneness is very positive.
- Osho

If you are lonely when you're alone, you are in bad company.
- Jean-Paul Sartre

Loneliness is not what it seems.
One does not feel lonely because one is alone,
but because of a feeling of lack -
a feeling that something is missing.
Loneliness is essentially independent
of how many other humans are around.
It has much more to do with one's self-esteem -
one's sense of inherent worth.
- Jonathan Lockwood Huie

Further reading: Feeling Discouraged?

Feeling Sorry for Yourself?

Solitude vs. Feeling Lonely

Feeling Alone