Abstract
The study of engineering ethics tends to emphasize professional codes of ethics and, to lesser degrees, business ethics and technology studies. These are all important vantage points, but they neglect personal moral commitments, as well as personal aesthetic, religious, and other values that are not mandatory for all members of engineering. This paper illustrates how personal moral commitments motivate, guide, and give meaning to the work of engineers, contributing to both self-fulfillment and public goods. It also explores some general frameworks for thinking about these commitments and calls for further exploration of them.