But what a blind fool I have been!

"I was a blind fool to listen to you."

A blind fool on a galloping horse could see the two of you are in love with each other.

That blind fool has invoked the dead, I can tell.

How could I have been such a blind, arrogant fool?

"And me a blind fool not to have seen it before."

She would have had to be a blind fool not to see the healthy glow on her aunt's face.

You are either a blind fool, or an actual coconspirator.

I sure was a blind fool, son, not to catch on to that.

She may be a blind fool, but she'll see once she's told where to look.