First, for your introduction ask yourself what the meaning of it is. What do you think it means? What are three reasons why you think it means what it means? Then give your thesis statement. Then you write your first paragraph it would be your first reasoning and give three details (as in examples of why you think what it is) on what you think about the quote. Your second paragraph should be your second reason, also give three details about that, and then your third paragraph for your third reason and three details, then you have your conclusion where you repeat all of this in a brief summary, you should give your thesis statement after your summary in the conclusion.
I hope this helped!