However, if it is my duty not only to rebuke others, but also to set forth my own views, I think all intelligent people will agree with me that while many of those who have pursued philosophy have remained in private life,1 others, on the other hand, who have never taken lessons from any one of the sophists have become able orators and statesmen. For ability, whether in speech or in any other activity, is found in those who are well endowed by nature and have been schooled by practical experience.2