Ludwig von Mises on how nationalists and classical liberals view free trade

The nationalists stress the point that there is an irreconcilable conflict between the interests of various nations, but that, on the other hand, the rightly understood interests of all the citizens within the nation are harmonious.  A nation can prosper only at the expense of other nations; the individual citizen can fare well only if his nation flourishes.  The liberals have a different opinion.  They believe that the interests of various nations harmonize no less than those of the various groups, classes, and strata of individuals within a nation.  They believe that peaceful international cooperation is a more appropriate means than conflict for the attainment of the end which they and the nationalists are both aiming at: their own nation's welfare.  They do not, as the nationalists charge, advocate peace and free trade in order to betray their own nation's interests to those of foreigners.  On the contrary, they consider peace and free trade the best means to make their own nation wealthy.  What separates the free traders from the nationalists are not ends, but the means recommended fo attainment of the ends common to both.

~ Ludwig von Mises, Human Action, p. 183

1949