Who said "I became an echo of many voices to hear my own"?

This quote is attributed to Peter Sellers.

I became an echo of many voices to hear my own - Peter Sellers

"I became an echo of many voices to hear my own"

Peter Sellers

Comedy Actor British 1925–1980

"I'm always looking for a new challenge, something I haven't done before."

"The world is a stage, and life's a very funny play."

"I thought what I'd do was pretend to be mad."

"We're all mad here. I'm mad. You're mad."