Aratus was by natural bent a statesman, high-minded, more exact in his public than in his private relations, a bitter hater of tyrants, and ever making a regard for the public weal determine his enmity or his friendship.
Wherefore he seems to have proved not so much a strict friend, as a considerate and mild enemy, changing his ground in either direction according to the exigencies of the state, loving concord between nations, community of cities, and unanimity of council and assembly, beyond all other blessings. It was manifest that he resorted to open warfare and strife without courage and with little confidence, but that in stealing advantages and secretly managing cities and tyrants he was most proficient.
Therefore, though he won many unexpected successes where he showed courage, he seems to have lost no fewer favourable opportunities through over-caution. For not only in the case of certain wild beasts, as it would seem, is the vision strong by night but wholly blinded in the day-time (since the humour in their eyes is too dry and delicate to bear contact with the light), but there is also in some men a cleverness and sagacity which is prone to be confounded in transactions that are carried out under the open sky and proclaimed abroad by public criers, but when confronting hidden and secret enterprises recovers its courage.
Such unevenness a lack of philosophy may cause in men of good natural parts; they produce virtue without scientific knowledge, and it is like spontaneous and uncultivated fruit. This can be proved by examples.