By ILRI’s Iain Wright: On 6–8 Jul 2017, I attended a conference at ICRAF on Impacts of International Agricultural Research: Rigorous Evidence for Policy organized jointly by the CGIAR ISPC’s SPIA and PIM. I welcomed the delegates at this meeting in Nairobi, Kenya, on behalf of ICRAF and the International Livestock Research Institute (ILRI), the two CGIAR centres headquartered in Nairobi. A modified version of my address and personal reflections on impact assessment in CGIAR follows.