He was physician to Madame de Pompadour, and one of the sincerest and most single-hearted of men probably in Paris at the time.
Blessed are the single-hearted, for they shall have much peace.
In waking hours he never had quite that single-hearted knowledge of himself.
Strong, but single-hearted, no other lady could comfort him.
While you cling to Him He will never forsake ...