I may add, though the remark leads me to step out of my subject, that they do not make us better acquainted with its greatness, its civilization, and its real prosperity.

Whensoever a power of any kind shall be able to make a whole people co-operate in a single undertaking, that power, with a little knowledge and a great deal of time, will succeed in obtaining something enormous from the co-operation of efforts so multiplied.

But this does not lead to the conclusion that the people was very happy, very enlightened, or even very strong.
The Spaniards found the City of Mexico full of magnificent temples and vast palaces; but that did not prevent Cortes from conquering the Mexican Empire with 600 foot soldiers and sixteen horses.

If the Romans had been better acquainted with the laws of hydraulics, they would not have constructed all the aqueducts which surround the ruins of their cities--they would have made a better use of their power and their wealth.

If they had invented the steam-engine, perhaps they would not have extended to the extremities of their empire those long artificial roads which are called Roman roads.