Related Clues:

• Intellectually bright student at university to join detective squad
• Able to think clearly
• Clear; sane
• Ms Blixen, perhaps, in a protagonist of Tolstoy
• Incomplete fortune I had collected? It's all there
• Clear; bright
• Sane characters held in ridicule when going the wrong way
• Left one daughter touring capitals between raves?
• Clear cover over caps
• Top copper turning up inside? That's easy to understand
• Clearly presented and easily understood
• Capable of thinking and expressing oneself clearly
• Bright; sane
• Rational, clear
• Quite clear