Listen and you might learn something new ~ Dalai Lama

Nice point by the Dalai Lama. Not that speaking can or should be avoided entirely. Asking questions and sharing your views has tremendous value and is absolutely necessary for the “market of ideas” to work. Indeed, I think you can learn a lot in the process of trying to express yourself. But an emphasis on listening can hardly hurt.

Dialogue is the ideal. 

When you talk, you are repeating what you already know. When you listen, you may learn something new.
~ Dalai Lama