Flavius Arrianus Xenophon (Arrian) - The Campaigns of Alexander (Quote One)

"The story goes that Alexander, upon his succession to the throne, went into the Peloponnese, where he assembled all the Greeks in that part of the country and asked them for the command of the campaign against Persia, which they had previously granted to Philip. The only people to refuse his request were the Lacedaemonians, who declared that the tradition of their country forbade them to serve under a foreign commander; it was their prerogative to lead others. At Athens, too, there was certain amount of trouble; but resistance collapsed the moment Alexander approached, and he was granted even greater honours than his father Philip before him. This settled, he returned to Macedonia and prepared for his Asian campaign." (Arrian - 1.42)

Arrian lived from est. 86 AD to 146 AD.