When the Senses contact sense objects, a person experiences cold or heat, pleasure or pain. 
These experiences are fleeting; they come and go.  Bear them patiently, Arjuna. 
Those who are unaffected by these changes, who are the same in pleasure and pain,
are truly wise and fit for immortality.  Assert your strength and realize this.

A very advanced spiritual person learns to be unaffected by the things of the material world happening around him.  Whether it's natural things like rain, or floods, or earthquakes or man made things like wars, the adept is aware of these things, but doesn't let them affect him or detur him from his course to enlightenment and immortality.  Some may think that is selfish, but it is the farthest thing from it.  Letting everything that happens around you control you is egotism, and that is real selfishness.  The spiritual person who rises above these things, increases his vibrations, as well as those of the world.  In so doing, he makes it easier for all of us to advance spiritually.  That is truly caring for your brothers and sisters.