Self-interest makes some people blind, and others sharp-sighted.
Self-interest speaks all manner of tongues and plays all manner of parts, even that of disinterestedness.
The passions possess a certain injustice and self interest which makes it dangerous to follow them, and in reality we should distrust them even when they appear most trustworthy.
We do not like to praise, and seldom praise anyone without self-interest.
Whatever pretended causes we may blame our afflictions upon, it is often nothing but self-interest and vanity that produce them.
Virtues lose themselves in self-interest, as rivers in the sea.
Loyalty is in most people only a ruse used by self-interest to attract confidence.
The name and pretense of virtue is as serviceable to self-interest as are real vices.
That good disposition which boasts of being most tender is often stifled by the least urging of self-interest.
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