Richard Nixon actually said...
No; the answer to the third question is that it is true that as far as the capacity to govern is concerned, that to be under a constant barrage--12 to 15 minutes a night on each of the three major networks for 4 months--tends to raise some questions in the people's mind with regard to the President, and it may raise some questions with regard to the capacity to govern.
Context
The President's News Conference
08/21/1973