Solitude and loneliness are not the same thing. Loneliness is the sign that something is lacking. The purpose of solitude is to bring us home to the center of ourselves with such serenity that we could lose everything and, in the end, lose nothing of the fullness of life at all. When you are alone, are you lonely or are in solitude? If loneliness is what it's about, what you may need most is the cultivation of the richness of solitude.
All final spiritual reference is to be the silence beyond sound. The word made flesh is the first sound. Beyond that sound is the transcendent unknown, the unknowable. It can be spoken of as the great silence, or as the void, or as the transcendent absolute.