It is clear that in mulling over harsh judgments, sinister predictions, and bad memories, we fashion our own sadness; in a certain sense, we savor it. Émile Chartier
Worry is a useless mulling over of things we cannot change. Peace Pilgrim
Frustration was my constant companion. I wanted to scream. "What the he-eck are we supposed to doI asked Fang. He looked at me, and I could tell he was mulling over the problem. He held out a small waxed-paper bag. Peanut? James Patterson