Alcibiades (34.2-34.3)

The goddess, therefore, did not appear to welcome Alcibiades with kindly favour and good will, but rather to veil herself from him and repel him. However, all things fell out as he wished, and one hundred triremes were manned for service, with which he was minded to sail off again; but a great and laudable ambition took possession of him and detained him there until the Eleusinian mysteries.

Ever since Deceleia had been fortified, and the enemy, by their presence there, commanded the approaches to Eleusis, the festal rite had been celebrated with no splendor at all, being conducted by sea. Sacrifices, choral dances, and many of the sacred ceremonies usually held on the road, when Iacchus is conducted forth from Athens to Eleusis, had of necessity been omitted.