Strabo Geography 1.1.13

[13] Every one who undertakes to give an accurate description of a place, should be particular to add its astronomical and geometrical relations, explaining carefully its extent, distance, degrees of latitude, and climate. ¹ Even a builder before constructing a house, or an architect before laying out a city, would take these things into consideration; much more should he who examines the whole earth: for such things in a peculiar manner belong to him. In small distances a little deviation north or south does not signify, but when it is the whole circle of the earth, the north extends to the furthest confines of Scythia, ² or Keltica, ³ and the south to the extremities of Ethiopia: there is a wide difference here. The case is the same should we inhabit India or Spain, one in the east, the other far west, and, as we are aware, the antipodes ⁴ to each other.