Andrew Carnegie was a Scottish-American industrialist and philanthropist who lived from 1835 to 1919. He was one of the richest people in the world at the time of his death, and he used his wealth to fund various philanthropic endeavors, including the construction of libraries and universities.
Dale Carnegie was an American writer and lecturer who lived from 1888 to 1955. He is best known for his books on self-improvement and public speaking, including "How to Win Friends and Influence People" and "How to Stop Worrying and Start Living."