Primary literature in English translation:

• Ewald, William B., ed., 1996. From Kant to Hilbert: A Source Book in the Foundations of Mathematics, 2 vols. Oxford Uni. Press.
  • 1918. "Axiomatic thought," 1115-14.
  • 1922. "The new grounding of mathematics: First report," 1115-33.
  • 1923. "The logical foundations of mathematics," 1134-47.
  • 1930. "Logic and the knowledge of nature," 1157-65.
  • 1931. "The grounding of elementary number theory," 1148-56.
  • 1904. "On the foundations of logic and arithmetic," 129-38.
  • 1925. "On the infinite," 367-92.
  • 1927. "The foundations of mathematics," with comment by Weyl and Appendix by Bernays, 464-89.
• Jean van Heijenoort, 1967. From Frege to Godel: A Source Book in Mathematical Logic, 1879-1931. Harvard Univ. Press.
• David Hilbert (1999). Geometry and Imagination. American Mathematical Society. ISBN 0-8218-1998-4.  - an accessible set of lectures originally for the citizens of Göttingen.

Secondary:

• Bottazini, Umberto, 2003. Il flauto di Hilbert. Storia della matematica. UTET, ISBN 88-7750-852-3
• Corry, L., Renn, J., and Stachel, J., 1997, "Belated Decision in the Hilbert-Einstein Priority Dispute," Science 278: nn-nn.
• Ivor Grattan-Guinness, 2000. The Search for Mathematical Roots 1870-1940. Princeton Uni. Press.
• Gray, Jeremy, 2000. The Hilbert Challenge, ISBN 0-19-850651-1
• Piergiorgio Odifreddi, 2003. Divertimento Geometrico - Da Euclide ad Hilbert. Bollati Boringhieri, ISBN 88-339-5714-4. A clear exposition of the "errors" of Euclid and of the solutions presented in the Grundlagen der Geometrie, with reference to non-Euclidean geometry.
• Reid, Constance, 1996. Hilbert, Springer, ISBN 0-387-94674-8. The biography in English.
• Sauer, Tilman, 1999. "The relativity of discovery: Hilbert's first note on the foundations of physics", Arch. Hist. Exact Sci., v53, pp 529–575. (Available from Cornell University Library, as a downloadable Pdf )
• Thorne, Kip, 1995. Black Holes and Time Warps: Einstein's Outrageous Legacy, W. W. Norton & Company; Reprint edition. ISBN 0-393-31276-3.
• Folsing, Albrecht, 1998. Albert Einstein, Penguin.
• Mehra, Jagdish, 1974. Einstein, Hilbert, and the Theory of Gravitation, Reidel.