[21] If now any one advancing deeply into the matter should choose to investigate it closely, he will see [4] clearly that there is no one thing so nearly related to another as independence of action. On which account there are a great many things which stand in the way of the liberty of a wicked man; covetousness of money, the desire of glory, the love of pleasure, and so on. But the virtuous man has absolutely no obstacle at all since he rises up against, and resists, and overthrows, and tramples on love, and fear, and cowardice, and pain, and all things of that kind, as if they were rivals defeated by him in the public games.