His Nobel citation concludes that "few, if any, research workers in the empirical field of economic science, have had so many successors and such a large impact as Lawrence Klein".
Kutipan Nobelnya menyimpulkan "sedikit, jika tak banyak, pekerja riset di bidang empiris ilmu ekonomi, memiliki begitu banyak pengganti dan dampak besar begitu seperti Lawrence Klein."