Never lose your self-respect, nor be too familiar with yourself when you are alone. Let your integrity itself be your own standard of rectitude, and be more indebted to the severity of your own judgment of yourself than to all external percepts. Desist from unseemly conduct, rather out of respect for your own virtue than for the strictures of external authority.
Baltasar GracianYou have to appear wiser and more prudent than is required by the people you are dealing with if you want to give a high opinion of yourself.
Baltasar Gracian