No longer allow this thing that I am to be made a slave.
For Marcus, the best part of himself is not his body or breath, but his reasoning faculty, his ruling reason. By nature, this portion of man is free and exercises complete autonomy over itself. But it becomes slavish when mingled with Vice, with Passion. The Ruling Faculty, if it is to remain free and not fall into slavery, must deny entry to the Passions. Reason is more powerful than Vice and can always eradicate it, but not while consorting with it.