"Shared joy is a double joy; shared sorrow is half a sorrow." -- (often identified as a) Swedish Proverb; other versions include:
"A joy shared is twice a joy, and a burden shared is half a burden."
"A joy shared is doubled; a sorrow shared is cut in half."
"A sorrow shared is but half a trouble, but a joy that's shared is a joy made double."
The tongue and the heart
"The tongue is the heart's messenger." -- Thomas Adams
"We need to think of our tongue as a messenger that runs errands for our heart." -- Chuck Swindoll "The tongue is a messenger that runs the errands of the heart." -- Unknown, maybe slightly misquoting Swindoll and Adams