Mankind could never be suspended

[This is from a letter to Charles Pinckney on September 7, 1793:]

Reason and usage have established that when two nations go to war, those who choose to live in peace retain their natural right to pursue their agriculture, manufactures, and other ordinary vocations, to carry the produce of their industry for exchange to all nations, belligerent or neutral, as usual, to go and come freely without injury or molestation, and in short, that the war among others shall be, for them, as if it did not exist. One restriction on their natural rights has been submitted to by nations at peace, that is to say, that of not furnishing to either party implements merely of war for the annoyance of the other, nor anything whatever to a place blockaded by its enemy. What these implements of war are, has been so often agreed and is so well understood as to leave little question about them at this day. There does not exist, perhaps, a nation in our common hemisphere, which has not made a particular enumeration of them in some or all of their treaties, under the name of contraband. It suffices for the present occasion, to say, that corn, flour and meal, are not of the class of contraband, and consequently remain articles of free commerce. A culture which, like that of the soil, gives employment to such a proportion of mankind, could never be suspended by the whole earth, or interrupted for them, whenever any two nations should think proper to go to war.