The Up star reveals his memory isn't what it used to be, and he fears any attempt to write his memoirs would be a waste of time.

"My memory fails me," he told WENN. "I don't like going back. Forward, onward and upward. It's all about the future which there ain't much of."

And Ed admits he's saddened by the state of the world and doesn't like what he's leaving his kids and grandchildren when he dies: "I'm not happy with the state of the world and what's going to happen to it," he added. "If I had a soft heart I'd pity my kids, especially my grandkids because it ain't pretty."

The actor is currently working on a one-man show, A Man & His Prostate, which was written by The Cosby Show co-creator Ed Weinberger, and he admitted he's glad he isn't the comedian, who is currently in the middle of a sex scandal after 40-plus women came forward with allegations suggesting Cosby raped and/or drugged them.

"My feeling about Cosby is where there's smoke there's some kind of fire," Ed said. "I'm glad I'm not him. I could use his money... (but) when he gets Gloria Allred (the lawyer representing many of the women making accusations against Cosby), he better run for the hills."