If all the wisdoms of the ancient world could be said to have been collected in one place, that place was Alexandria. Cleopatra was its direct beneficiary. She knew that the moon had an effect on tides, that the Earth was spherical. She knew of the existence of the equator, the value of pi, the latitude of Marseilles, the behavior of linear perspective, the utility of a lightning conductor. She knew that one could sail from Spain to India, a voyage that was not to be made for another 1,500 years, though she herself would consider making it, in reverse.
