of all the natural virtues these four are "cardinal," i.e., the hinges ("cardes") on which all other virtues turn, the foundations on which all the other virtues are built.
— Peter Kreeft
Giving is the most powerful tool God has at His command. It is His cardinal law.
— Kenneth Copeland
No cardinal or essential doctrine is altered by any textual variant that has plausibility of going back to the original. The evidence for that has not changed to this day.
— Lee Strobel
Do you think your mother came back? Shelby asks him. Definitely. She's a cardinal who lives in my backyard.
— Alice Hoffman
National defense is one of the cardinal duties of a statesman, and that there is an obligation to perform such a duty absolutely irrespective of party politics or factional differences.