Moderate Folks and Fanatics

"The mark of a moderate man is freedom from his own ideas."  Tao Te Ching, Ch. 59, as interpreted by Stephen Mitchell (1992).

The first two questions I have about this passage are relatively simple: If it is true that the mark of a moderate man is freedom from his own ideas, then is the mark of a fanatic that he is enslaved to his own ideas?

If so, how does a fanatic become enslaved to his own ideas?

The next two questions I have about this passage are perhaps less simple: In so far as most or all of us see the world through the lens of our ideas about the world, are not most or all of us somewhat less than free of our own ideas?

If so, what would it mean to be free of one's own ideas?