There are many wonderful and inspiring quotations on the kindness theme; please add your favourites:
Be kind whenever possible. It is always possible. Dalai Lama
For beautiful lips, speak words of kindness.” Audrey Hepburn
Today, give a stranger one of your smiles. It might be the only sunshine he sees all day. Quoted in P.S. I Love You, compiled by H. Jackson Brown, Jr.
Treat everyone with politeness, even those who are rude to you – not because they are nice, but because you are.
If you want others to be happy, practice compassion. If you want to be happy, practice compassion. Dalai Lama
I always prefer to believe the best of everybody, it saves so much trouble. Rudyard Kipling