One that I really relate to on a deep level is this:
Solitude is dangerous. It’s very addictive. It becomes a habit after you realize how peaceful and calm it is.
That sums up my own feelings, 100 percent. There's an entire roundup of quotes relating to solitude that are uplifting, inspiring, or thought-provoking: https://www.rootsofloneliness.com/solitude-quotes
Do you have a favorite, or a new one to share?