Jean-Jacques Rousseau is described by many as a paradoxical philosopher. He often seems to be asserting both sides of a contradiction. His teaching has been a source of inspiration for various opposing and even antagonistic political movements and doctrines: He is considered to be one of the first thinkers of modern democracy, and an apostle of totalitarianism. He is the father of "Natural Education", but his thoughts might sound as a program for "Social Engineering" of human beings. He is a romantic, longing to simple life within nature, but again, he is a loyal son of the bourgeois civilization of his era. Rousseau's Paradoxical character is also reveled in his account of "Progress". It seems that he is saying to contradictionary things about this notion. On the one hand, it appears that, according to Rousseau, mankind can realize freedom only through a process of historical progress. On the other: that progress has enslaved men and brought disaster upon them. These paradoxes have deceived many of Rousseau's readers and interpreters, who chose to emphasize one side of Rousseau at the expanse of the opposite. The book "Rousseau: Progress as a trap" strive to avoid this mistake. It shows that the greatness of Rousseau's philosophy lies precisely in its dialectical character. Rousseau is indeed a Severe critic of progress, but his critique is not merely an "external" and purely-negative one: He is a philosopher of the enlightenment, and accepts the principles of enlightenment (in fact, he is one of the formulators of such principles). On behalf of these principles he criticizes enlightenment itself. Rousseau's decree, that progress has enslaved mankind, gets its critical substance only if one presumes, as did Rousseau, that progress should emancipate mankind. The philosophers of the enlightenment celebrated progress. In his optimistic epoch, and without denying the credo of enlightenment, Rousseau pointed out a dark and dangerous character of human progress. This book shows the Rousseau's dialectical, or ambivalent approach to progress anticipates important currents in 20th century philosophy and critical theory. Due to this approach, Rousseau's philosophy is perhaps more relevant today than it was during his lifetime.