Usually, we think that "good" loneliness is what we call "solitude," the choice of some alone-time. But I want to press on with the negative dimension, to look at ways in which a fundamental sense of being separated from others shapes who we are and why.
Oh, I'm developing a beautiful character! It droops a bit under cold and frost, but it does grow fast when the sun shines. That's the way with everybody. I don't agree with the theory that adversity and sorrow and disappointment develop moral strength. The happy people are the ones who are bubbling over with kindliness.