Related Clues:

• General guiding rule
• In which, theoretically, capital is spoken of
• Tenet of cardinal, reportedly
• Personal rule of conduct school head put into speech
• General scientific law
• Scientific law
• Primary cause of royal taking one Poet Laureate
• Sounds like the most important rule
• Truth from headteacher on the radio
• One place keeps royal member out, as a rule
• Basic truth, law or assumption
• Fundamental truth I place in member of royal family
• Integrity or uprightness
• Basic standard
• Rule head teacher's announced