cardinal virtue

Belying his stern image, his first encyclical, the most authoritative form of papal writing, centered on love, one of three treatises he planned to write on the cardinal virtues of love, hope and faith.

Among the cardinal virtues, according to the Stoics, are courage and wisdom.

"I heard that forgiveness is a cardinal virtue for Hindus," I said.

Doubt is a cardinal virtue in the sciences, which advance through skeptics’ willingness to question the experts.

Slack is very useful at a publication like The Verge, where speed is a cardinal virtue.