This is one of the best books on Hindu philosophy, that I've ever read in my life. Despite more than a century passing since he gave his lectures, I doubt there is a better exposition of Hindu philosophy, religion and Indian customs and thought than what Swami Vivekananda said, in the English language. The language is very simple, with no high sounding words. The message is clear and concise, expressed in simple language, yet the thoughts are so deep, that they stay with you in dark times, and inspire to never accept defeat and stay true to your path and your true self, the Atman.
The exposition of Jnana Yoga was very interesting. I am indeed moved. Much more than a philosophy, it is a view of the world, and oneself, one that illuminates minds and souls, and by thinking which, even a simple man uplifts himself. Above all, it shows a way to live life, understanding the true nature of things. Advaita has a fine explanation of even the cosmos, facts about the nature and creation of the universe which even modern science haven't been able to grasp, and which hasn't been contradicted yet.
Much has been passed since the author wrote this book. I wonder how he would feel at the state of present India, given his immense love for the country. We have done much better materially and the majority of our countrymen are no longer starving and quite a many of them lead comfortable lives, far more than what was in the British Raj. We have regained political independence from foreign rule. But, a drastic change that has occurred is the loss of intellectual and cultural sovereignty at the mass level. Rampant moral degeneration fuelled by consumerism, advertisements and the media in general, have led to a sorry state of affairs for our youth, and the pride in one's culture and traditions have declined on mass level. I doubt Swami Vivekananda would have approved of this. However, one can take some solace in the fact that, science and modernism haven't led to decline of the Hindu religion, unlike in the West. I think Swami Vivekananda has a huge contribution to that, in that he clearly recognized that modern science wasn't so different from what was already written by our ancient philosophers, and showed the basic philosophical similarities. A large number of the youth owes its pride in the Hindu culture to the writings and life of Swami Vivekananda, and I am one of them.
I would recommend this book to whoever is even a little bit interested in Hindu philosophy. The other books aren't as good as this one. In the midst of personal opinions, personalities of certain self styled gurus, and a lot of jargon, the real Hinduism is somewhere hidden, and the ordinary Hindu as well as an outsider trying to understand the tradition is left confused.