A short witty statement is an

A short witty statement is an "epigram". An epigram is a concise, clever, and often paradoxical statement. It is intended to be memorable and thought-provoking. Epigrams are commonly used in literature, poetry, and everyday speech to express a witty observation or a humorous remark. They often make use of wordplay, irony, or satire to convey their message in a succinct and memorable way.