Andy Weir. Martian (№ 384023)

... Everyone has dominant over the other instinct is to help other people. Sometimes it's hard to believe but it's true.
If the mountain lost traveler, people organize the search. If wrecked train - line up to donate blood. If an earthquake compares with the city's land - send humanitarian aid from all over the world. This is so fundamental feature of the person, that its reflection can be found in all cultures. Yes, there are idiots who do not care, but they get lost among people for whom other people matter.