This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...s actions are indifferent, inimical or damaging to her, it is his lack of integrity that makes him immoral.
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The same principle applies to relationships among friends. If one’s fr
iend is in trouble, one should act to help him by whatever nonsacrificial means are appropriate. For instance, if one’s friend is starving, it is not a sacrifice, but an act of integrity to gi
ve him money for food rather than buy some insignificant gadget for oneself, because his welfare is important in the scale of one’s personal values. If the gadget means more than the friend’...