Ekonomipristagaren Paul Samuelson får följande fråga:

What is the absolute limit to taxation (give a maximum percentage of GDP)?

Hans svar:

Above 50% marginal tax rates are self-defeating.

Lyssnar svenska politiker på nationalekonomins (nyss avlidne) nestor?

Ur Horn, Karen Ilse (2009). Roads to Wisdom: Conversations with Ten Nobel Laureates in Economics. Cheltenham: Edward Elgar: 266.