One of the most interesting, as well as the most learned of the group was Leon Landsberg, an American by citizenship and a Russian Jew by birth. He had all the great qualities of his race — emotion, imagination, a passion for learning, and a worship of genius. For three years, he was Swami Vivekananda's inseparable companion, friend, secretary, attendant. His intimate knowledge of Europe, its philosophies, its languages, its culture, gave him a profundity and depth of mind which are rare. He was fiery and picturesque. His indifference to his personal appearance, his fanaticism, his pity for the poor, which amounted to a passion, drew Swamiji to him. He often gave his last penny to a beggar, and always he gave not out of his abundance, but out of a poverty almost as great as the recipient's. He had as well a position on a New York paper which required but little of his time and gave him a small income. While he and Swamiji lived together in 33rd Street in New York, they shared what they had. Sometimes there was sufficient for both and sometimes there was nothing. After the classes were over at night, they would go out for a walk, ending with a light meal which was inexpensive, as the common purse was often empty. This did not trouble either of them. They knew that when it was needed, money would find its way into the purse again.
To be continued.... (Memoirs of Sister Christine)