The crossword solution for the term 'MORE MATTER, WITH LESS ART: HAMLET' is 'LESS'. This is a reference to a line from William Shakespeare's play HAMLET, in which the title character says 'Brevity is the soul of wit.' In other words, he is saying that it is better to express oneself WITH fewer words and MORE thought than to use many words without much substance. This phrase has become a popular proverb, and is often used to refer to the idea that LESS is MORE.