The Institute for Humanist Studies (IHS) is a think tank based in Washington, DC, USA, that says it is "committed to information and practices meant to address the sociopolitical, economic and cultural challenges facing communities within the United States and within a global context." IHS, consistent with the American Humanist Association and the International Humanist and Ethical Union, says that it understands humanism to be “a progressive philosophy of life that, without theism and other supernatural beliefs, affirms our ability and responsibility to lead ethical lives of personal fulfillment that aspire to the greater good of humanity.”