Unaided Quotes (2 quotes)
The effort of the economist is to see, to picture the interplay of economic elements. The more clearly cut these elements appear in his vision, the better; the more elements he can grasp and hold in his mind at once, the better. The economic world is a misty region. The first explorers used unaided vision. Mathematics is the lantern by which what before was dimly visible now looms up in firm, bold outlines. The old phantasmagoria disappear. We see better. We also see further.
In Mathematical Investigations in the Theory of Value and Prices (1892), 119.
The materials of wealth are in the earth, in the seas, and in their natural and unaided productions.
Speech in Senate (12 Mar 1838). In The Writings and Speeches of Daniel Webster (1903), Vol. 8, 177.
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion.
(1987) -- 
