You cannot be too gentle, too kind.
Shun even to appear harsh in your treatment of each other.
Joy, radiant joy, streams from the face of him who gives and kindles joy in the heart of him who receives.
All condemnation is from the devil. Never condemn each other… Instead of condemning others, strive to reach inner peace.
Keep silent, refrain from judgment. This will raise you above the deadly arrows of slander, insult, and outrage and will shield your glowing hearts against all evil.
St. Seraphim of Sarov (d. 1833)
[This can be found in several places on the internet. I have the quote above my desk and fail to live up to it on a daily basis, but a good aspiration nonetheless]