Philanthropy in this report refers only to personal philanthropy. It does not include corporate giving or Corporate Social Responsibility (CSR) spend. The term 'big philanthropy' is used for the philanthropy of Ultra High Net Worth Individuals (UHNWIs). Throughout the report, 'philanthropist' refers to Ultra High Net Worth Individual philanthropist. This usage is only for brevity, as the scope of this study is focused on philanthropy of the very wealthy, rather than the entire universe of remarkable philanthropists who come from all walks of life, and are equally, if not more generous than the subjects of this study. This should not give an impression that the authors and editors believe that only Ultra High Net Worth Individuals can be phi...