All I can do is to urge on you to regard friendship as the greatest thing in the world; for there is nothing which so fits in with our nature, or is so exactly what we want in prosperity or adversity.
True law is right reason in agreement with nature;...it summons to duty by its commands, and averts from wrongdoing by its prohibitions... It is a sin to try to alter this law, nor is it allowable to attempt to repeal any part of it, and it is impossible to abolish it entirely.
The illustrious and noble ought to place before them certain rules and regulations, not less for their hours of leisure and relaxation than for those of business.