附原文：
Free trade does not imply the elimination of all tariffs. What it doesimply is that no attempt will be made to raise domestic prices by imposing import duties, to give domestic producers a chance to sell their waresmore advantageously than their foreign competitors. Only two kinds of import duties are therefore compatible with free trade：
1. Duties levied on articles for which consumption taxes are imposed(alcoholic beverages, tobacco, and tobacco products); these duties mustbe set at exactly the same level as domestic taxes for these products.
2. Retaliatory tariffs, which apply to imports of all or certain commodities from countries that adopt a hostile policy toward Austrian exports. Retaliatory tariffs must be imposed at any given time only against a limitednumber of countries, to maintain Austria’s supply of each of these individual articles at world market prices.
原文出处为Mises, A Draft of Guidelines for theReconstruction of Austria,1940, in Selected Writings of Ludwig von Mises: The Political Economy of InternationalReform and Reconstruction, edited by Richard Ebeling. 原文为德语，德语标题为Entwurf von Richtlinien für den Wiederaufbau Österreichs.
ps.对这本文集感兴趣的可以私。