There are some things which a man never speaks of, which are much finer kept silent about.
 Henry David Thoreau, A Week on the Concord and Merrimack Rivers (1849). copy citation

Context

“I shall not tell them whether I do or not. As if they expected a vote of thanks for every fine thing which they uttered or did. Who knows but it was finely appreciated. It may be that your silence was the finest thing of the two. There are some things which a man never speaks of, which are much finer kept silent about. To the highest communications we only lend a silent ear. Our finest relations are not simply kept silent about, but buried under a positive depth of silence never to be revealed. It may be that we are not even yet acquainted.” source