My mind drifted back to the boy and the man.

My mind again drifted back to when I was a child.

His mind drifted back to the beginning of the space age.

As the car rose, his mind drifted back to the past again.

Sometimes, during the day, my mind would drift to her.

I have thousands of people watching me, but my mind will drift to what's going on back home.

The young man's mind drifted back to the argument he'd had with his wife the night before.

His mind had drifted from the coming storm outside to the old one inside him.

However, his mind was far away from the images drifting across the movie screen.

Her mind drifted back to the last time she'd seen him, right after Tommy had moved out.