Authors:

There would not be so many open mouths if there were not so many open ears.

Joseph Hall, John Webster Morris (1867). “Devotions, Sacred Aphorisms and Religious Table Talk: Selected from the Writings of the Eminently Pious and Learned Bishop Hall ; to which is Prefixed a Brief Memoir of the Author”, p.380
There would not be so many open mouths if there were not so many open ears.