Note 296 — Chapter LVIII · FROM THE RESOLUTION OF THE ATHENIANS TO ATTACK SYRACUSE, DOWN TO THE FIRST WINTER AFTER THEIR ARRIVAL IN SICILY.
Reading edition
Plutarch (Alkib. c. 20) and Diodorus (xiii, 2) assert that this testimony was glaringly false, since on the night in question it was new moon. I presume, at least, that the remark of Diodorus refers to the deposition of Diokleidês, though he never mentions the name of the latter, and even describes the deposition referred to with many material variations as compared with Andokidês. Plutarch’s observation certainly refers to Diokleidês, whose deposition, he says, affirming that he had seen and distinguished the persons in question by the light of the moon, on a night when it was new moon, shocked all sensible men, but produced no effect upon the blind fury of the people. Wachsmuth (Hellenisch. Alterth. vol. ii, ch. viii, p. 194) copies this remark from Plutarch.
I disbelieve altogether the assertion that it was new moon on that night. Andokidês gives in great detail the deposition of Diokleidês, with a strong wish to show that it was false and perfidiously got up. But he nowhere mentions the fact that it was new moon on the night in question; though if we read his report and his comments upon the deposition of Diokleidês, we shall see that he never could have omitted such a means of discrediting the whole tale, if the fact had been so (Andokid. de Myster. sects. 37-43). Besides, it requires very good positive evidence to make us believe, that a suborned informer, giving his deposition not long after one of the most memorable nights that ever passed at Athens, would be so clumsy as to make particular reference to the circumstance that it was full moon (εἶναι δὲ πανσέληνον), if it had really been new moon.