Carry the notion of the individual to its limit and you get a monstrosity, just as you do if you carry the notion of a group to its limit. - Paul Samuelson

I think Marshall was a great economist, but he was a potentially much greater economist than he actually was. It was not that he was lazy, but his health was not good, and he worked in miniature.

In every actuarial situation of mathematical probability, no matter how large the numbers in the sample, we are left with a finite sample: in the appropriate limit law of probability there will necessarily be left an epsilon of uncertainty even in so-called risk situations.

The goals, methods, and strategies of what borders on science is different from the gyration of fashion and the incommensurability of arts and music in different epochs. Because this different process of cumulative science is imperfect, historians and philosophers of science intermittently downplay this difference.