Related Clues:

• Decorative heading
• Category
• Principle
• Adage
• Words to live by
• If A = B and B = C, then A = C, e.g.
• Accepted rule
• Saw
• It goes without saying
• It's a given
• Self-evident truth
• Explanatory comment
• 'Time is money,' e.g.
• Basic principle
• Authoritative rule