My 82 year old aunt said to me:

Being nice to people who are nice to us is not enough. You have to learn to be nice to those who are not nice to us. If you are able to do it, that is when you know you are nice.

Having known her all my life, I know she has lived by this herself. I have so many childhood memories of her being super nice. One time as she and her family were boarding a train for Poona (Pune now) from the Delhi railway station and we were sending them off, my mother, her younger sister, casually asked her to find pants similar to her daughter's, for me for a future visit. My aunt promptly asked her daughter to go change in the train and give me the pants right away, before the train left. This spontaneous gift set the bar for what it means to be generous for my future life. 

Another time, my mother mentioned to her sister that my grandmother had refused to let me have an old tape-recorder that my father had left behind in her house while he was working overseas. My aunt promptly procured a new tape-recorder as a gift for me. The gesture was appreciated since tape recorders were a luxury back then. I was too young to express that it was not the tape recorder that I really had asked my grand-mother for, but the recordings it played of my childhood voice with my father, that I heard on the tapes in her house, since I had no other memory of my father.

Feeling blessed to have her in my life.