Book 12
7.9
This much even the blind can see, as the saying is, and no one who is the possessor of sufficient wealth to satisfy his needs (and that does not imply any great opulence) will seek to secure an income by such methods without laying himself open to the charge of meanness. On the other hand, if his domestic circumstances are such as to require some addition to his income to enable him to meet the necessary demands upon his purse, there is not a philosopher who would forbid him to accept this form of recompense for his services, since collections were made even on behalf of Socrates, and Zeno, Cleanthes and Chrysippus took fees from their pupils.
7.10
Nor can I see how we can turn a more honest penny than by performance of the most honourable of tasks and by accepting money from those to whom we have rendered the most signal services and who, if they made no return for what we have done for them, would show themselves undeserving to have been defended by us. Nay, it is not only just, but necessary that this should be so, since the duties of advocacy and the bestowal of every minute of our time on the affairs of others deprive us of all other means of making money.
