John C. Calhoun quotes and aphorisms about continue John C. Calhoun John C. Calhoun ,, With such irresistible evidence before us of the great and rapid progress of abolitionism without t... John C. Calhoun ,, Every increase of protective duties is necessarily followed, in the present condition of our countr... John C. Calhoun ,, Every dollar of tax imposed on our exchanges in the shape of duties impairs, to that extent, our ca...