It is as unwise to underestimate the enemy's bitterness and power to do harm as it is to overestimate them. Very often a man, blinded by his ego, fails to estimate the power of the enemy and he says, "Oh, what can he do? What do I fear?" giving way to an impulse when driven to it by the enemy. This is a defeat; keeping steadfast and calm under such circumstances is a victory. Complaining about the harm caused by the enemy is a weakness; avoiding it by taking precautions, facing it with strength and checking it with power are the things worth doing. It is wise to take advantage of the criticism made by an enemy, for it can help to correct us; and it is foolish when one laughs it off, considering oneself to be too good to be like that.