Mother Teresa principle:
The more you care about the powerless, the more power you have. The more you serve with no influence, the more influence God gives you. The more you humble yourself, the more you are honored by others.
Kahlil Gibran on Giving
It is well to give when asked, but it is better to give unasked, through understanding; And to the open-handed the search for one who shall receive is joy greater than giving. And is there aught you would withhold? All you have shall some day be given; Therefore give now, that the season of giving may be yours and not your inheritors'.