In order to answer any essay question, planning is key. The first thing to do here would be to figure out all of the characters considered 'outsiders' in this novel by Woolf. This would include Lucrezia and Septimus individually, Elizabeth, Peter Walsh, and Ms. Kilman as well as others. As you note down each character, it is good to start thinking in what way they are outsiders. Is it because of their nationality, their lack of conformity, their gender or their choices in life? Then start looking at how these aspects overlap - or don't - and the feelings evoked. Many of the characters may experience loneliness because of their exclusion therefore it is best to compare these characters, look for subtle differences as well as overriding similarities. After this, it is important to ask why. Why are they different, why has Woolf created each character the way she has, and what is her point - if there is one. Woolf is often a contentious writer, but also often writes for the beauty of writing. Question whether she is trying to make a comment about female choice, or whether she is adding to the characterisation and plot. Once you have found enough detail, it is important to find the right structure for the essay so that it flows smoothly. Talk about one type of outsider, compare the characters, and then move on to the next group, all the while having a continuous thread run through, which you can sum up in the conclusion. At the same time, you should be thinking about which quotes would sum up your points. Ideally, each point would be accompanied with a quote - which should be fairly short and sharp. Each of these quotes should then be analysed for the language used, to highlight your knowledge and understanding of technique. Finally, your conclusion should link back to the title with the ideas you have developed throughout the essay and summarise the result of your analysis.