Institutio Oratoria

However, since one man cannot undertake the cases of all litigants who are not, as many undoubtedly are, dishonest, he will be influenced to some extent by the character of the persons who recommend clients to his protection and also by the character of the litigants themselves, and will allow himself to be moved by

the wishes of all virtuous men; for a good man will naturally have such for his most intimate friends.