"Sheriff, I do believe you're thinking impure thoughts," she said.

We were encouraged to tell everyone about our impure thoughts.

It's a sign from God of your impure thoughts.

There was no reason to allow the possibility of impure thoughts into her mind.

I should not dare to have an impure thought about you.

"I shouldn't like us to be responsible for giving Brother William impure thoughts."

Never had an illegal or impure thought in his life, that one.

"I already had an impure thought," he said with a smirk.

I tried to vanquish every impure thought from my head.

She'd be able to think without being warned about impure thoughts.