The poets aim is either to profit or to please, or to blend in one the delightful and the useful. Whatever the lesson you would convey, be brief, that your hearers may catch quickly what is said and faithfully retain it. Every superfluous word is spilled from the too-full memory.
Seize the day [Carpe diem]: trust not to the morrow.
Care clings to wealth: the thirst for more Grows as our fortunes grow.
Whom does undeserved honour please, and undeserved blame alarm, but the base and the liar?
Dull winter will re-appear.
When you have well thought out your subject, words will come spontaneously.