And then, as above indicated, beyond this primary series of effects produced on others there is a secondary series of effects. The adequately egoistic individual retains those powers which make altruistic activities possible. The individual who is inadequately egoistic loses more or less of his ability to be altruistic. The truth of the one proposition is self-evident, and the truth of the other is daily forced on us by examples. Note a few of them. Here is a mother who, brought up in the insane fashion usual among the cultivated, has a physique not strong enough for suckling her infant, but who, knowing that its natural food is the best, and anxious for its welfare, continues to give it milk for a longer time than her system will bear. Eventually the accumulating reaction tells. There comes exhaustion running, it may be, into illness caused by depletion; occasionally ending in death, and often entailing chronic weakness. She becomes, perhaps for a time, perhaps permanently, incapable of carrying on household affairs; her other children suffer from the loss of maternal attention; and where the income is small, payments for nurse and doctor tell injuriously on the whole family. Instance, again, what not unfrequently happens with the father. Similarly prompted by a high sense of obligation, and misled by current moral theories into the notion that self-denial may rightly be carried to any extent, he daily continues his office work for long hours regardless of hot head and cold feet; and debars himself from social pleasures, for which he thinks he can afford neither time nor money. What comes of this entirely unegoistic course? Eventually a sudden collapse, sleeplessness, inability to work. That rest which he would not give himself when his sensations prompted, he has now to take in long measure. The extra earnings laid by for the benefit of his family are quickly swept away by costly journeys in aid of recovery, and by the many expenses which illness entails. Instead of increased ability to do his duty by his offspring, there comes now inability. Life-long evils on them replace hoped-for goods.