In very few things can we be sure of future salability, and in a society where people are free to study what they want, and work where they want, and invest as they want, there is no way to keep supply and demand in labor in perfect accord.

• 几乎没什么能使我们对未来的自我推销能力非常有把握，在一个人们想学什么就学什么，想去哪干什么就去哪干，想怎么投资就怎么投资的社会，不可能使劳动力的供求关系和谐一致。