Clive Day, A history of commerce (1922)
“ The power of modern commerce appears in the vast quantities of wares which are exchanged through its agency; its sensitiveness is shown by the readiness with which the currents of trade are turned or even reversed to suit the occasion. It has been said that commerce turns from one side of the globe to the other on a difference of a cent on a bushel of grain, a dollar on a ton of metal, a quarter of a cent a yard on a textile fabric, or a sixteenth of a cent on a pound of sugar. So sensitive has the commercial world become to every stimulus that it feels also every shock. ”
