Until our own days, through the crisis of individualism which has prevailed since the last century, crime has been regarded as the most essentially individual thing in the world; and the notion of what might be called undivided crime was lost among criminologists, as was that also of collective sin among theologians. Whenever the attempts of conspirators or the exploits of a band of robbers forced the recognition of the existence of crimes committed collectively, the criminal nebulosity was promptly resolved into distinct individual offenses of which it was regarded as only the sum. But now the sociological or socialistic reaction against this great egocentric illusion is turning attention toward the social side of acts which are mistakenly attributed to the individual... No one can understand criminal conduct without knowing something of the psychology of human action. First of all, it must be understood that reason, which so many have idealized and placed in control of the human machine, has little to do with the actions of men. It is a common habit with most men to find fault with and bewail the fact that human beings do not act from reason. However much the truth is impressed upon us, we never seem to realize that the basis of action is in instinct and emotion. It is really useless to quarrel with Nature. Whether it would have been better to have made man some other way is not worth discussing. He has been evolved in a certain way and we must take him as he is. Our impatience with the method that Nature has provided for influencing human conduct is largely due to our idea of the meaning of life.