No man can serve two masters.

A person cannot give complete loyalty and obedience to two authorities whose demands compete. When obligations pull in different directions, attempting to satisfy both sides creates a conflict of allegiance.

The saying advises choosing a primary commitment rather than pretending incompatible duties can be balanced indefinitely. It can describe divided loyalty in work, family, politics, religion, or other situations involving rival claims on judgment and action.

Use this proverb when leaders, institutions, roles, or commitments demand conflicting priority from one person, not merely several manageable or separable responsibilities. Its traditional “man” is generic; an inclusive paraphrase may suit some settings.