What this mean: ';True the index of a man's character is the health of his wife';?

If the wife is in good health that is a good indication of the way he treats her. I think they mean more like mental health which by the way can affect your physical health.What this mean: ';True the index of a man's character is the health of his wife';?
It means ';If Momma Ain't Happy then Nobody Is!';What this mean: ';True the index of a man's character is the health of his wife';?
It means a man of strong character treats his wife well and she's healthy and happy. A man with weak character neglects his wife and doesn't treat her well and her health suffers.