“No wandering minds allowed.”

“You must have your wits about you. No wandering minds allowed.”

“Never allow your mind to wander untamed like a wild animal that exists on the basis of survival of the fittest. Tame your mind with consistent focus on your goals and desires.”

“Books have always been among my most trusted of friends, Mr. Linden replied. The best of them allow the mind to wander wherever the author's musings lead.”

“Ponder just let it happen. It's because their minds are so often involved with deep and problematic matters, he told himself, that their mouths are allowed to wander around making a nuisance of themselves.”

“For me, it's been liberating to put myself in the mind of a fictitious six year-old each day, and rediscover my own curiosity. I've been amazed at how one idea leads to others if I allow my mind to play and wander.”