There is a popular quote attributed to Albert Einstein that says, "Generations to come will scarce believe that such a one as this ever in flesh and blood walked upon this earth." This quote is often misinterpreted or misattributed to imply that Einstein said Gandhi was the only person who understood him. However, there is no credible evidence to suggest that Einstein made such a specific statement about Gandhi understanding him.
Einstein and Gandhi did have a mutual respect for each other's work and ideas. They corresponded through letters and had discussions on various topics, including pacifism, civil rights, and social justice. Gandhi was known to have admired Einstein's scientific achievements and praised his advocacy for peace. However, there is no documented evidence to support the claim that Einstein made a statement explicitly stating that Gandhi was the only person who understood him. It is important to be cautious about attributing quotes to famous individuals without proper verification.