"For the early Greek writers Ethiopia was less a geographical location than a state of mind. For Greeks and Romans generally, Ethiopians meant dark-skinned peoples who lived south of Egypt. At times the reference was so vague as to include peoples from West Africa, Arabia, and India. At times it was more localized, referring to the Nubian kingdom of Kush, with its capital first at Napata and later at Meroe. What was constant was that the name Ethiopian denoted a person of dark color — literally, of burnt face — and that it connoted, above all else, remoteness."

“There are benefits to be gained from the ambiguities of scientific discourse. Of the four previously identified functions served by ambiguity, two remain outside the boundaries of scientific work. The function of attaining enlightenment through the intuition of indeterminacy belongs to mysticism, or perhaps to philosophy and poetry, not to the disciplined activity of science. And the protection of one's meanings and intentions through ambiguously opaque utterance, while perhaps useful as a protective ploy in scientific competition, cannot be sanctioned as appropriate conduct for a scientific enquirer. Through its two other functions, however — the evocative representation of complex meanings and the bonding of a community through diffuse symbols — ambiguity has long served and will continue to serve the general objectives of scientific activity. It is useful for scientific formulations to express an abundance of meanings, for these can ignite a cluster of insights that in turn lead to novel explorations.”