Some of the most endearing animated characters of all time didn't speak (Dopey in Snow White, the Magic Carpet in Aladdin, ect.). And sound designer Ben Burtt, who did Wall*E's "voice", did similar duties for R2-D2, so I'd say we're in good hands. 
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"I know I can do it," Todd Downey said, helping himself to another ear of corn from the steaming bowl. "I'm sure that in time, every bit of her will be gone and her death will be a mystery... even to me."
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