Good start. You have a good quote in the introduction to start off your essay. However, make sure the ideas are connected. After the quote, you should follow it up with something actually about courage instead of suddenly talking about fame. Also, in the second paragraph, you might want to cut down on the history. Some background on Alexander is good, but you want to use the majority of your writing on the persuading part instead of writing up a history paper. The history was interesting though. But make sure you spend more time arguing your case.