Who are the most important essay writers in history?

When it comes to history coursework writing, many students would like to know which books and authors could they read in search for inspiration. Who were the most important essay writers of all times? What did they write about in their essays? What can a student learn from their work today?
Reading other writers is the best way of obtaining some coursework help or even ideas for your very own dissertation writing. So if you are looking for writing techniques or strategies, going straight to the sources implies a visit to your local library. And, while you are there, it would be no harm looking for these famous names.