Friedrich August von Hayek

"The credit which the apparent conformity with recognized scientific standards can gain for seemingly simple but false theories may, as the present instance shows, have grave consequences."

"The curious task of economics is to demonstrate to men how little they really know about what they imagine they can design."

"This means that to entrust to science - or to deliberate control according to scientific principles - more than scientific method can achieve may have deplorable effects."

"We shall not grow wiser before we learn that much that we have done was very foolish."