"The book is a capital book; in purpose, in vision, in grasp of the facts our people most need to realize. It shows an extraordinary range of reading and a wide scholarship. It shows a habit of singular serious thought on the subject of most commanding importance. It shows a fine fearlessness in assailing the popular and mischievous sentimentalities and attractive and corroding falsehoods which few men dare assail. It is the work of an American scholar and gentleman; and all Americans should be sincerely grateful to you for writing it"
- Theodore Roosevelt
This is also the book that's widely rumored to be Hitler's "bible". What great company, eh? Roosevelt and Hitler, great nationalists of world history. (that's sarcasm, for those who missed it) Now, I can't source that quote, so I do take it with a grain of salt. But I know there's plenty out there which is not available online.
It's important to note that Grant was a huge conservationist. But as is with everything else that progressives engage in, their stated goal is only a means. The end is what makes them dangerous.