The importance of both Solitude and Fellowship

I've blogged twice now on solitude, here and here. I'm very intrigued by the subject I guess. However, I know about myself that it's easier to retreat into solitude than to engage others in fellowship. I was struck by this sentence when reading Life Together yesterday. It comes from the chapter, "The Day Alone."

One who wants fellowship without solitude plunges into the void of words and feelings, and one who seeks solitude without fellowship perishes in the abyss of vanity, self-infatuation, and despair."

Wow...very convicting.