Alfred Marshall, the man most responsible for Keynes’s career choice, was also the one most responsible for the new way of thinking. To paraphrase a great American economist, Paul Samuelson: before Marshall, economics was about what you couldn’t change. The new economics was about what you could.
凯恩斯的事业选择很大程度上缘于阿尔弗雷德.马歇尔,此人同样在很大程度上引领了新的思维方式。保罗.萨缪尔森这样诠释这位伟大的美国经济学家:在马歇尔之前,经济学探讨的是你无法改变什么。有了马歇尔,经济学转向你可以改变什么。
Consider the dismal science when Marshall took it up. There was no cheering up Karl Marx, who, landing in London in 1849, witnessed the Victorian economic miracle and, to quote Gladstone, 20 years of improvement in the “average condition of the British laborer ... unexampled in the history of any country and of any age.” The British founders of political economy were scarcely less glum. John Stuart Mill, a libertarian, socialist and supporter of unions and women’s rights, doubted whether democratic reforms or technological progress could have much effect on how the average Briton lived.
设想马歇尔刚涉足这门沉闷学科的情景吧。1849年卡尔·马克思登陆伦敦时,迎接他的没有喝彩欢呼声,他目睹了维多利亚时代的经济奇迹,引述格莱斯顿的话说“史无前例,英国工人身处的整体形势”连续二十年不断进步,然而英国政治经济学的奠基人们却未减一丝阴郁。古典自由派、支持联盟和女权的社会主义者约翰·穆勒怀疑,民主改革或技术革新是否能大大改善英国人的生活水平。
When he published “Das Kapital” in 1867, Marx claimed that he was revealing society’s “law of motion.” Yet he had never bothered to visit a single factory. Marshall devoted months every year to touring factories in virtually every major industry, interviewing businessmen, trade union leaders and workers. A trip to America confirmed that competition was the ingenious mechanism that compelled managers to constantly improve their operations, then to share the gains with workers. If wages depended on productivity, workers themselves — and their elected representatives — could influence their prospects by pursuing or promoting mobility, education and public health.
1867年,马克思发表《资本论》时宣称,书中揭示了社会的“运行规律”,而他从未讨扰自己随便走访一家工厂。而马歇尔每年花数月时间走访工厂,基本上把大的分属不同产业的工厂走遍了,他采访商人、贸易联盟的领导和工人。他的美国之行证实了一点,竞争是绝妙的途径,它迫使管理者不断改进经营方式,并与工人一同分享利润。如果生产力决定了工资的多寡,那么工人们——以及他们之中卓越的代表——通过追求或改进人员流动、加强自身教育和公共卫生的建设,就能开创自己的大好前途。