Well this doesn't exemplify humanity but this popped into my mind. You know that person that you met maybe once a long time ago and still think about on a fairly regular basis? You never know how many times you are that person as well and I am sure everyone is that person to at least one other. Anyone has the ability to effect anyone else's life, for the good or the bad, at any time. I have a few but I will mention just one. My ex's father was having heart surgery many years ago and neither her or his wife drove so I have to go out there to drive them all around. I took the commuter train instead of driving for some reason. Took them in for the surgery, stayed for a few days, picked him up and drove him home. My ex wanted to stay overnight and so decided to as well and she decided to get absofuckinglutely tanked. I was really tired and she would not let me go to sleep. And then she got aggressive and so I thought it would be best if I just left. 3 a.m. when it was -20 Celsius out and I did not have my car. But the train station was only a block away so I would just go hang out there until first train at 5. When I got there I realized Sunday trains did not start until 10. So I hunkered down on a bench and tried to get some sleep. It was pretty shitty and I felt like shit but just put my hat down and tried to ignore people as they wandered in. I was eventually woken up as the train pulled into the station by some maybe 85 y.o. Indian man. (I was a 30s white guy). I was pretty bleary and hadn't shaven in 3 days and all curled up on the bench with my backpack so I probably really looked like shit. Then he walked over to the machine and asked me where I was going as he was going to by me a ticket. He thought I was a bum! I was so touched that this old, retired, immigrant would be looking after a stranger like that. I thanked him but declined. We ended getting off at the same stop and so I asked him if he time for breakfast or a coffee. And that I would be buying. He just had time for a small coffee as he was on his way to open up the family store (and he was 85 but fit as shit) and so we had a nice little chat and then went on our way. I have thought about his kindness and his work ethic probably a few times a year for the last 10+ years. So yeah for me that is definitely one of those people.