Take heede of still waters, the quick passe away. [Take heed of still waters, they quick pass away.]

If we had a keen vision and feeling of all ordinary human life, it would be like hearing the grass grow and the squirrel's heart beat, and we should die of that roar which lies on the other side of silence.

I like not only to be loved, but to be told that I am loved; the realm of silence is large enough beyond the grave

All Heaven and Earth are still, though not in sleep, But breathless, as we grow when feeling most.

What silence rules the ghostly hours
That guard the close of human sleep!
(“The Testimony of the Suns”)

Three things are ever silent--Thought, Destiny, and the Grave.