One man’s wickedness may easily become all men’s curse.

A single person acting badly can impose costs on people who had nothing to do with it, because trust is a shared resource and it drains from one point. One fraud produces a hundred new forms for everybody. One betrayal makes a whole team careful with each other for a year. The damage is rarely contained to the person who caused it.

That runs the other way too, which is the usable part. Your own conduct in small matters is part of what everyone around you can assume. Where you are tempted to cut a corner because it affects nobody, check that claim honestly.