This is my translation of an excerpt from «Silentium!» by Фёдор Тютчев [Fëdor Tiutchev].
To Jon Kertzer
How can the heart itself express,
Into another ear confess
The means by which live you or die?
Thought outspoken is a lie;
You blast the earth and vex the source
—Now silence keep—and slake your thirst.