The book is divided into three parts, each of which focuses on the ideas associated with one of Einstein's papers. Part I considers Woolf in relation to Einstein's paper on light quanta, arguing that questions of duality and complementarity had a wider cultural significance in the early twentieth century than has yet been acknowledged, and suggesting that Woolf can usefully be considered a complementary, rather than a dualistic, writer. Part II looks at Lawrence's reading of at least one book on relativity in 1921, and his subsequent suggestion in Fantasia of the Unconscious that 'we are in sad need of a theory of human relativity', a theory which is shown to be relevant to Lawrence's writing of relationships both before and after 1921. Part III considers Woolf and Lawrence together alongside late nineteenth- and early twentieth-century discussions of molecular physics and crowd psychology, suggesting that Einstein's work on Brownian motion provides a useful model for thinking about individual literary characters.