The phrase 'highest virtue' is correct and can be used in written English.
It usually implies a moral or ethical quality of the highest standard. For example, you could say, "Honesty is the highest virtue a person can possess."
Actions like these reflect a society in which success, not goodness, has become our highest virtue.
Or indeed to have considered whether honesty of this sort is the highest virtue.
For as all Jesuit alumni know, the highest virtue is prudence.
Our political institutions led us, earlier than many, to the conclusion that freedom was the highest virtue.
And if you believe it is the highest virtue for a person to remain for ever himself, it is hard then to assert that the highest virtue is for a person to be for ever someone else.
Wagamama means selfish, willful; in a culture where personal sacrifice is the highest virtue, the connotation is far harsher, especially for women.
Ise Shintō establishes purity and honesty as the highest virtues, realizable through religious experience.
The movie also illustrates another thing: that politics is the best place to develop the highest virtues.
But he saw something noble, too, in the relentless search: "It is also deeply connected with the highest virtues of academic man — the impulse toward perfection".
In both Hinduism and Islam, filial obedience is among the highest virtues, and Mumtaz Begum, a Muslim woman, and Umadi Lal Ratre, a low-caste Hindu man, defied the deepest wishes of their parents by marrying across religious lines.
Modern suburban Americans, it is argued, rarely sink to the level of depravity -- they are too tepid for that -- but they don't achieve the highest virtues or the most demanding excellences.
