Ethics are rules or conduct codes that outline the moral guidelines that must be followed. In medicine it is against the ethics of the medical code to experiment on patients without their consent. In college professors should uphold a standard of ethics that includes not sleeping with the students and not changing a grade based on anything other than the academic work of a student.
Never let a sense of what is right blind you to what is true
Public morals are natural complements of all laws: they are by themselves an entire code
Just being honest is not enough. The essential ingredient is executive integrity