Thomas Huxley thought “the smallest fact is a window through which the Infinite may be seen.” His ideas moved from minute particulars to universal propositions. In 1869 he coined the word “agnostic’” to denote a method of thinking that required empirical data rather than biblical revelation to accept the existence of God. The Huxley tenets entailed wrestling with conscience, psychological stresses, spiritual anxiety, and anguish. Her focus is on two eminent scientific thinkers, Thomas (1825-1895) and his grandson Julian Huxley (1887-1975), but she does not provide a conventionally structured family biography following a neat chronological sequence. His descendants became investigators and thinkers who worked with high intensity to clarify some of the boldest, most contentious ideas of the 19th and 20th centuries.

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