Martin Buber was a famous Jewish philosopher who lived in the early 1900s. He was very interested in understanding how people connect, interact, and relate to each other. He believed that we need to see each other as individuals and not just as objects or things. He wrote a lot about how to build meaningful relationships, and he wrote a lot about how to live a good life. His main idea was that there is something special between two people when they meet each other "eye to eye" - this is called "I-Thou" relationships. He believed that this kind of connection was the most important thing in life.