Journalists, politicians, and other Americans are remembering "60 Minutes" legend Mike Wallace Monday.

The CBS News interrogator passed away Saturday at the age of 93.

Fellow "60 Minutes" correspondent Morley Safer said Wallace was responsible for the continuing success of the news magazine.

Wallace earned a reputation as a tough interviewer. Some people said the four most dreaded words in the English language were, "Mike Wallace is here."

According to The New York Times, his son, Fox News anchor Chris Wallace, noted in a recent interview that his father's mind had begun to slip.

"The interesting thing is, he never mentions '60 Minutes,'" Chris Wallace said. "It's as if it didn't exist. It's as if that part of his memory is completely gone."

"The only thing he really talks about is family - me, my kids, my grandkids, his great-grandchildren," he said.

"There's a lesson there," he noted. "This is a man who had a fabulous career and for whom work always came first. Now he can't even remember it."