I challenged things that needed to be challenged at Purdue.

I made lots of talks and challenged lots of people.

But you've got to make choices, and you're not going to be right all the time.

While he was president, it was popular to be a Nixon hater.

I challenged things that needed to be challenged at Purdue.

I understood public relations and always maintained a high profile.

I was a stubborn cuss, and I made some mistakes.