There was no wisdom in what she said, only folly.

All he has to do is persist in his folly.

"A prince whom in her folly she believes will be a king."

Both of them, needless to say, are encouraging him in his folly.

Then we will hear whether you persist in your folly or not.

Here is another example, grotesque in its greed and folly.

"I have no desire to wallow in human folly tonight."

For none of the People would be so sunk in folly as to share with enemies the weapons they had.

Parliament in its wisdom or folly has banned all such trade, true enough.

What I did next is matched in folly only by Lot's wife.