virtue (n) an example of moral goodness or excellence.

tact (n) a virtue; a sense of what is fitting and considerate in dealing with others, so as to avoid giving offense or to win good will; a keen sense of what is appropriate, tasteful, or aesthetically pleasing; discrimination; discretion; diplomacy; incorporates both honesty and compassion.

Integrity is telling myself the truth. And honesty is telling the truth to other people. – Spencer Johnson

Tact is the art of making a point without making an enemy. – Sir Isaac Newton

It is tact that is golden, not silence. – Samuel Butler