Florence Kelley once said: “No man since Lincoln has understood the common people as Louis Brandeis does.” While the majority of Mr. Brandeis’s great progressive achievements have been connected with the industrial system, some have been political in a more limited sense. I worked with him through the Ballinger-Pinchot controversy, and I never saw a grasp of detail more brilliantly combined with high constructive ethical and political thinking. After the man who knew most about the details of the Interior Department had been cross-examined by Mr. Brandeis he came and sat down by me and said: “Mr. Hapgood, I have no respect for you. I do not think your motives in this agitation are good motives, but I want to say that you have a wonderful lawyer. He knows as much about the Interior Department today as I do.” In that controversy, the power of the administration and of the ruling forces in the House and Senate were combined to protect Secretary Ballinger and prevent the truth from coming to light. Mr. Brandeis, in leading the fight for the conservation side, was constantly haunted by the idea that there was a mystery somewhere. The editorial printed above hints at how he solved the mystery, but it would require much more space to tell the other sides, the enthusiasm for conservation, the convincing arguments for higher standards in office, the connection of this conspiracy with the country’s larger needs. Seldom is an audience at a hearing so moved as it was by Mr. Brandeis’s final plea to the committee. Possibly his work on railroads will turn out to be the most significant among the many things Mr. Brandeis has done. His arguments in 1910–11 before the Interstate Commerce Commission against the raising of rates, on the ground that the way for railroads to be more prosperous was to be more efficient, made efficiency a national idea. It is a cardinal point in his philosophy that the only real progress toward a higher national life will come through efficiency in all our activities. The seventy-eight questions addressed to the railroads by the Interstate Commerce Commission in December, 1913, embody what is probably the most comprehensive embodiment of his thought on the subject.