"Scientific truth is not what any one scientist puts forth. It can be that, but it is generally not. It is the sum of multiple studies that all lean in the same direction in their results conducted by different people at different times of different nationalities with different competitive urges who all end up getting the same result. Then you have an emerging scientific truth, and then you put that in the textbooks, and that will never be shown to be wrong later on."

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Rome was mud and smoky skies; the rank smell of the Tiber and the exotically spiced cooking fires of a hundred different nationalities. Rome was white marble and gilding and heady perfumes; the blare of trumpets and the shrieking of market-women and the eternal, sub-aural hum of more people, speaking more languages than Gaius had ever imagined existed, crammed together on seven hills whose contours had long ago disappeared beneath this encrustation if humanity. Rome was the pulsing heart of the world.

— Marion Zimmer Bradley