"People who don't believe in God may have their own way of justifying some bad act they have committed"

This quote recommends that people who do not believe in God may still have a moral code that they abide by, however that they might also find methods to validate their bad actions. This could be done by justifying their habits or by finding a way to make it appear less incorrect. It could also be done by encouraging themselves that their actions were required or that they had no other option. This quote implies that even those who do not think in God can still find ways to validate their bad habits, even if it is not in line with their own moral code. Eventually, this quote suggests that people should understand their own values and strive to follow it, no matter their beliefs.