Plutarch Aratus 36

[1] In the campaign of this year ¹ he was defeated by Cleomenes near Mount Lycaeum, and took to flight; and, since he lost his way in the night, he was thought to be dead, and once more a story to this effect had wide currency among the Greeks. But he escaped alive and rallied his soldiers, and then was not content to come off safely,

[2] but making the best use of his opportunity, when no one expected or had any idea of what was to happen, he suddenly made an assault upon Mantineia, which was in alliance with Cleomenes; and having taken the city, he set a garrison there, and made its alien residents full citizens, thus acquiring single-handed for the conquered Achaeans what they could not easily have obtained as conquerors.

[3]
  And again, when the Lacedaemonians made an expedition against Megalopolis, ² he went to the aid of the city, but was loth to give Cleomenes a chance for the hand-to-hand fighting which he desired, and resisted the importunities of the Megalopolitans. For he was never at any time well fitted by nature for set battles, and at this time in particular he was inferior in numbers, and was matched against a man who was young and daring, while his own courage Was past its prime, and his ambition chastened. He also thought that the glory which his adversary was trying to acquire by his daring and did not possess, had already been acquired by himself and must be preserved by his caution.