Paul Samuelson Quote
It is some relief to move from the exalted realm of philosophical ethics to the mundane realm of scientific methodology. However, I rather shy away from discussions of Methodology with a capital M. To paraphrase Shaw: Those who can do science; those who can't prattle about its methodology.
My Life Philosophy: Policy Credos and Working Ways, in M. Szenberg (ed.) Eminent Economists: Their Life Philosophies (1992)