Robert Solow, the author of the famous model of economic growth and one of the most renowned economists, a student of Nobel laureate Wassily Leontief and a teacher of many Nobel laureates, passed away on December 21, 2023. Konstantin Egorov, a Visiting Professor at the Einaudi Institute for Economics and Finance and NES graduate, recalls his great legacy in a column for GURU. Solow's models were so simple that they do not even need to be simplified to be retold, he notes, and yet modern researchers of growth not only follow in Solow's footsteps, but also work solely with his residual.