Loneliness is a problem, it's just that too many people confused being alone with being lonely. Our language has wisely sensed these two sides of man’s being a

Loneliness is a problem, it's just that too many people confused being alone with being lonely. Our language has wisely sensed these two sides of man’s being alone. It 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. (...) We are alone, perhaps in the midst of multitudes, but we are not lonely. Solitude protects us without isolating us. But life calls us back to its empty talk and the unavoidable demands of daily routine. It calls us back to its loneliness and the cover that it, in turn, spreads over our loneliness. -- Paul Tillich, "The Eternal Now"