But the experience of the world, from China to Britain, has exposed the vain attempt of fortifying any extensive tract of country. An active enemy, w… - Edward Gibbon

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But the experience of the world, from China to Britain, has exposed the vain attempt of fortifying any extensive tract of country. An active enemy, who can select and vary his points of attack, must, in the end, discover some feeble spot, on some unguarded moment. The strength, as well as the attention, of the defenders is divided; and such are the blind effects of terror on the firmest troops, that a line broken in a single place is almost instantly deserted.