Norton, John D. (2009). How Hume and Mach helped Einstein find special relativity. 收錄於 Michael Friedman, Mary Domski & Michael Dickson (eds.) Discourse on a New Method: Reinvigorating the Marriage of History and Philosophy of Science. Open Court. p359-86.
愛因斯坦 1944年12月7日寫給 Robert Thornton 的信,愛因斯坦檔案館文獻編號 61-573。見 http://plato.stanford.edu/entries/einstein-philscience。(原文:So many people today --- and even professional scientists --- seem to me like somebody who has seen thousands of trees but has never seen a forest. A knowledge of the historic and philosophical background gives that kind of independence from prejudices of his generation from which most scientists are suffering. This independence created by philosophical insight is --- in my opinion --- the mark of distinction between a mere artisan or specialist and a real seeker after truth.)