Ball, Sir Robert S. "Kepler." In his Great Astronomers, pp. 96-115. London: Isbister and Company, 1895.
Brief biographical sketch of Kepler's life and career.
Bell, Arthur E. "The Example of Johann Kepler." In his Newtonian Science, pp. 18-38. London: Edward Arnold, 1961.
Discusses the intellectual influences on scientists during the sixteenth and seventeenth century and of the importance of mathematics for grounding the theories of Kepler, Newton, and others in breaking away from the formalism of Greek science.
Berstein, Jeremy. "Heaven's Net." The American...
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