Alfred Cobban 
Rousseau and the Modern State [PDF ebook] 

First published in 1934, and revised and expanded in 1964, this book is the standard work on the political thought of Rousseau. It was acclaimed by English reviewers as ‘an excellently arranged, lucidly written, unbiased account of Rousseau’s political theory’, a ‘scholarly book, distinguished for lucidity both in thought and style’, and a ‘first-rate book in defence of the essential sanity of Rousseau’s thought’.