Cicero lead by the example of his life, and by all accounts he was ethical, moderate, and constantly strove to better himself and gain knowledge. Like other Romans, he believed that we all have a duty to society, and he took his personal and civic responsibilities seriously.
Consequently he set a great example of maturity and personal growth, and his advice is worth taking seriously today. I have gathered some of his best quotes into the post below. You can be sure that regardless of your age, you lack maturity if you do these 5 things: