Fear can make you do more wrong than hate or jealousy. If you’re afraid you don’t commit yourself to life completely; fear makes you always, always hold something back. You shouldn’t be alone. It’s killing you; it’s undermining you. All the time, every day, you should be somewhere with people.
"Flow My Tears, The Policeman Said". Book by Philip K. Dick, Chapter 21 (p. 171), 1974.