Sentence:  Again , Henley 's attitude of <WSD>defiance</WSD> which colors his ideal of self mastery is far from characteristic of a Stoic thinker like Marcus Aurelius , whose gentle acquiescence is almost Christian , comparable to the patience expressed in Milton 's sonnet on his own blindness . 
Meaning of the word marked with <WSD> tags:  intentionally contemptuous behavior or attitude