By exposing the widening gap between chief executive and worker pay for over 20 years, the Institute for Policy Studies has certainly not found itself flush with contributions from corporations. It is unfortunate that “Scholarship or Business? Think Tanks Blur the Line” did not name the subset of think tanks like I.P.S. that don’t solicit contributions from governments and large corporations, and whose donors don’t benefit financially from the research they support.

I.P.S. solicits and receives funding from foundations and individual donors who align with our mission of turning ideas into action for peace, justice and the environment, and who respect our ability to conduct quality, independent research.

Read the full letter on the New York Times’s website.

John Cavanagh is the director of the Institute for Policy Studies E. Ethelbert Miller is the board chair of the Institute for Policy STudies