a statement that expresses something that people believe is always true or should be followed (Oxford)
2. a short statement, especially one expressing advice or a general truth (Cambridge)
Every storyteller should remember Aristotle’s dictum that a story must have a beginning, a middle and an end. (Oxford)
He followed the famous American dictum "Don't get mad, get even". (Cambridge)
Aristotle’s dictum
famous American dictum "Don't get mad, get even"
Maxim
Precept
Silliness
Absurdity
Dictum