Worry is a form of fear.
“Fear is the main source of superstition and one of the main sources of cruelty.”
“Worry is like a rocking-chair. It gives you something to do buy gets you nowhere.”
“But if that was going to happen, it was going to happen whether or not he worried about it.”
“Perhaps the greatest worry of all was that one day you would realize that all the worries of your life amounted to one thing: the desire to just stop worrying.”