"When in Rome, do as the Romans do" is a classic example of the ethical perspective of cultural relativism.

"When in Rome, do as the Romans do" means that one should behave according to the customs and traditions of the culture they are in, rather than imposing their own values and beliefs on others. This aligns with the principle of cultural relativism, which states that all cultures have intrinsic value and should be judged based on their own belief systems and practices, rather than through the lens of one's own culture.