"supreme virtue" is correct and usable in written English.
It can be used when referring to a quality that is held in high esteem and is seen as a desirable trait. For example: "Honesty is a supreme virtue revered by many."
Such a system would make loyalty a supreme virtue and independence of thought a dangerous adventure.
It now concerned the relative merits of virginity (the supreme virtue) and marriage.
The supreme virtue of the show is that it puts the current crisis in context.
Once upon a time it would have been, for him, the supreme virtue.
Though, for the ancient Greeks, Desire "sits enthroned among the mighty laws", romantic love has no supreme virtue.
The supreme virtue of Michael Barker-Caven's production, however, is that it proves the play is much more than a Goodbye Mr Chips-style tearjerker.
Her weakness, her doubt, disgust Annabeth, for whom strength and certainty are supreme virtues.
Greaves's subject is far more than one particular bout — it's about the sport, and the business, of boxing, and he realizes his comprehensive and general view by way of a resolutely, obstinately precise attention to the particular details of one particular fight, one which, owing to the supreme virtues of its athletes, is among the supreme events in the history of the sport.
I would not intend any reflection on Timoleon for accepting of a house and handsome estate in the country, which the Syracusans presented him with; there is no dishonour in accepting; but yet there is greater glory in a refusal, and the supremest virtue is shown in not wanting what it might fairly take.
"Before he agreed to do business with me, his question was, 'Do you believe in God?' " Mr. Davis also reads motivational books about management and entrepreneurship by such authors as Stephen Covey and John Maxwell, whose messages convinced him that consistency is a supreme business virtue.
Its strands are the make-believes of an Edwardian nursery (pirates, redskins, wild animals, fantastical adventures in far-off places) woven together with a gently ironical vision of the values of the grown-up world (Mr Darling counting the cost of potential children in hypothetical medical bills; old Etonian Captain Hook loathing Peter Pan for having the supreme social virtue of "good form").
