Do not speak unless what you have to say is better than silence. – Siddhartha Gautama Buddha
It is with words as with sunbeams. The more they are condensed, the deeper they burn. – Robert Southey
Love is one thing and words are something else, and only the soul knows where the two meet. – Juan Gelman
Two things to remember in life: Take care of your thoughts when you are alone, and take care of your words when you are with people.