She had thought a lot about her future on the way home.

Certainly he wasn't used to thinking quickly on his feet.

Although no one knew if he would ever be able to think on his own again.

Even with a total of four years to think back on the experience, they hadn't seen.

I had to be able to think on my feet.

Even though they were still friends, I think on some level he thought they'd get back together.

They have no will to think or act on their own.

I could almost feel him thinking on his end of the phone.

You just had to let others know, he thought on the way out the door.

You've given me a great deal to think on further.