The laws of physics thus resemble: This comparison was used also by Weinberg 2005.

University of Manchester astronomer: Leahy 2001.

Einstein has become the embodiment: Among the many biographies of Einstein, I want to mention in particular Isaacson 2007, Fölsing 1997, and a book that presents other aspects of his personality beautifully: Overbye 2000.

Physicist Richard C. Tolman: Letter on September 14, 1931. Document 23-031 in the Albert Einstein Archives.

a universe with a cosmological constant: Lemaître’s ideas about galaxy formation were expressed, eg, in Lemaître 1931b, 1934.