My question is regarding being mute (by choice or otherwise): what are the difficulties in being successful? Are there notable examples of such people? I'm not mute myself, but I thought it was an interesting question for the following reasons.
I would think working in academia means coming up with new and interesting ideas through research, while also conveying these ideas and results in an effective manner to an audience, both through papers and giving talks. So success should be possible in some aspects of academia (such as papers), but not in others (such as giving talks).