Throughout history, many of the richest of the rich have felt a responsibility to help the less fortunate.
A philanthropist is someone who engages in philanthropy; that is, someone who donates his or her time, money, and/or reputation to charitable causes. The term may apply to any volunteer or to anyone who makes a donation, but the label is most often applied to those who donate large sums of money or who make a major impact through their volunteering, such as a trustee who manages a philanthropic organization.