Virtues are acquired through endeavor, Which rests wholly upon yourself. So, to praise others for their virtues Can but encourage one's own efforts.Thomas Paine
It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own interest.Adam Smith
Great ambition, the desire of real superiority, of leading and directing, seems to be altogether peculiar to man, and speech is the great instrument of ambition.Adam Smith