The difference between being selfless and selfish is vast. One extreme to the other in a flash.
Is this type of nature occur at conception? A giving heart a caring heart a kind heart? Can it be taught? Might it be learned behavior by having examples in your parents for instance?
Selfish is really something to behold. Those who have enough or more than enough or more than they can spend in a googolplex of lifetimes still want more. Millionaires seek to be billionaires. I wonder when a trillionaire will emerge.
What is the line that defines us? Can we start out being giving and end up being grasping greedy?