How we cite our quotes: (Book.Chapter)
Quote #10
It follows that the aim we should set ourselves is a social aim, the benefit of our fellow citizens. A man directing all his own impulses to this end will be consistent in all his actions, and therefore the same man throughout. (11.21)
If he's going to pick a purpose and aim in life, we think that Marcus has chosen the right one for his profession. As emperor, he is in a position to effect the most good for the largest number of people. It's also especially pressing for him as a leader to remain consistent in his behavior. To have such a goal allows him to funnel his focus and energy into an appropriate channel for his station in life.