“I was a man who thrived on solitude; without it, I was like another man without food or water. Each day without solitude weakened me. I took no pride in my solitude, but I was dependent on it.”

-Charles Bukowski

My corollary: I sometimes break into solitude even in social settings. I don't mean to be rude or aloof; it's just the way I am. I can zone out at any time.