Trying to make peace with Hugh had been a foolish idea.

Trying to tie morality to financial activity is a foolish idea.

They had no foolish ideas about the dignity of man.

It was his idea, however foolish, to beam himself down.

We are still too young for natural deaths, he always thought, knowing that it was a foolish idea.

Only she was not going to give in to any such foolish idea!

That's how war is fought, in case any of you have foolish ideas to the contrary.

It was not a foolish idea, but a rational and practical one.

She summoned her strength and beat the foolish ideas back.

You have no right to risk our lives with your foolish ideas!