Enchiridion 36

Just as the propositions, "It is day," and "It is night," are full of meaning when separated, but meaningless if united; so also, granted that for you to take the larger share at a dinner is good for your body, still, it is bad for the maintenance of the proper kind of social feeling. When, therefore, you are eating with another person, remember to regard, not merely the value for your body of what lies before you, but also to maintain your respect for your host.

Epictetus, Enchiridion 36, translated by W. A. Oldfather

As the proposition it is either day or it is night is of great importance for the disjunctive argument, but for the conjunctive is of no value, so in a symposium (entertainment) to select the larger share is of great value for the body, but for the maintenance of the social feeling is worth nothing. When then you are eating with another, remember to look not only to the value for the body of the things set before you, but also to the value of the behaviour towards the host which ought to be observed.

Epictetus, Enchiridion 36, translated by George Long

The phrases, 'It is day' and 'It is night', mean a great deal if taken separately, but have no meaning if combined. In the same way, to choose the larger portion at a banquet may be worth while for your body, but if you want to maintain social decencies it is worthless. Therefore, when you are at meat with another, remember not only to consider the value of what is set before you for the body, but also to maintain your self-respect before your host.

Epictetus, Enchiridion 36, translated by P. E. Matheson