From semantics to shipbuilding, from dream theory to propositional logic, any specialist ... is invariably astonished to discover that modern knowledge was foreshadowed at the time. ... Should we not replace these foreshadowings by the study of the influences of Hellenistic thought on modern thought?

Today Eratosthenes' method [of calculating the circumference of the earth] seems almost banal... yet it is inaccessible to prescientific civilizations, and in all of Antiquity not a single Latin author succeeded in stating it coherently.

Euclid manages to obtain a rigorous proof without ever dealing with infinity, by reducing the problem [of the infinitude of primes] to the study of finite numbers. This is exactly what contemporary mathematical analysis does.

From semantics to shipbuilding, from dream theory to propositional logic, any specialist ... is invariably astonished to discover that modern knowledge was foreshadowed at the time. ... Should we not replace these foreshadowings by the study of the influences of Hellenistic thought on modern thought?

Since UFO stands for "unidentified flying object", the word ufology means approximately "knowledge about unknown flying objects", and is therefore a "science" whose content is void by definition. Similar considerations hold for parapsychology.

Unfortunately, the optimistic view that "classical civilization" handed down certain fundamental works that managed to include the knowledge contained in the lost writings has proved groundless. In fact, in the face of a general regression in the level of civilization, it's never the best works that will be saved through an automatic process of natural selection.

About Archimedes one remembers that he did strange things: he ran around naked shouting 'Heureka!', plunged crowns into water, drew geometric figures as he was about to be killed, and so on. One ends up forgetting he was a scientist of whom we still have many writings.