Being kind is more important than being right.
(Andy Rooney, late television social commentator)
Well, we might argue about the “being right” part. One should never intentionally be or do wrong. But in doing right or even claiming to be right, we should “speak the truth in love” (a biblical admonition), and always treat others with kindness.
Make sure that nobody pays back wrong for wrong, but always try to be kind to each other and to everyone else. (1 Thessalonians 5:15)