Related Clues:

• Sound quality
• The first 'H' of H.H.S.
• It's often toasted
• Rationality
• Fitness
• ''To your ---''
• Reason
• One's most valuable possession, perhaps
• Subject of many a toast
• Good sense
• Marbles, so to speak
• It can be improved by 39-Across
• Soundness of mind
• Well-being
• Sensibleness