Einstein: His Life and Universe

New York Times

, Apr. 3, 1921.

63

. “Pronounced Sense of Humor,”

New York Times

, Dec. 22, 1936.

64

. Folsing, 429; Highfield and Carter, 196.

65

. Reiser, 127; Marianoff, 15, 174. Both of these authors married daughters of Elsa. Reiser’s real name was Rudolph Kayser.

66

. Elias Tobenkin, “How Einstein, Thinking in Terms of the Universe, Lives from Day to Day,”

New York Evening Post

, Mar. 26, 1921.

67

. Frank 1947, 219; Marianoff, 1; Folsing, 428; Reiser, 193.

CHAPTER ELEVEN: EINSTEIN’S UNIVERSE

1

. Overbye, 314; Einstein to Karl Schwarzschild, Jan. 9, 1916.

2

. Einstein, “On a Stationary System with Spherical Symmetry Consisting of Many Gravitating Masses,”

Annals of Mathematics

, 1939.

3

. For a description of the history, math, and science of black holes, see Miller 2005; Thorne, 121–139.

4

. Freeman Dyson in Robinson, 8–9.

5

. Einstein to Karl Schwarzschild, Jan. 9, 1916.

6

. CPAE vol. 8 brings together all of the correspondence between Einstein and de Sitter, with a good commentary on the dispute. Michel Janssen (uncredited author), “The Einstein–De Sitter–Weyl–Klein debate,” CPAE 8a (German edition), p. 351.

7

. Einstein to Willem de Sitter, Feb. 2, 1917.

8

. Einstein to Paul Ehrenfest, Feb. 4, 1917.

9

. Einstein, “Cosmological Considerations in the General Theory of Relativity,” Feb. 8, 1917, CPAE 6: 43.

10

. Einstein 1916, chapter 31.

11

. Clark, 271.

12

. For a delightful fictional tale along these lines (so to speak), see Edwin Abbott’s

Flatland

, first published in 1880 and available in many paperback editions.

13

. Edward W. Kold, “The Greatest Discovery Einstein Didn’t Make,” in Brock-man, 205.

14

. Lawrence Krauss and Michael Turner, “A Cosmic Conundrum,”