Noun
Private interest; the interest or advantage of one's self.
Source: Webster's dictionaryself interest
We have always known that heedless self-interest was bad morals; we know now that it is bad economics. Franklin D. Roosevelt
The punters know that the horse named Morality rarely gets past the post, whereas the nag named Self-interest always runs a good race. Gough Whitlam
Altruism is masked self-interest. Aggressive self-interest is a masked urge to self-destruction. Greg Bear
Will springs from the two elements of moral sense and self-interest. Abraham Lincoln
There is some self-interest behind every friendship. There is no friendship without self-interests. This is a bitter truth. Chanakya
I'm backing David Cameron's campaign out of pure, cynical self-interest. Boris Johnson