rationality, reason, reasonableness
道理をわきまえていること
the state of having good sense and sound judgment
分別があり的確な判断ができること
his rationality may have been impaired
彼の合理性は損なわれたかもしれない
he had to rely less on reason than on rousing their emotions
彼は情緒をかき乱すことよりも理性に訴えなくてはならない