“The Tragic Sense of Life is an immensely impressive work of biography and intellectual history, and a fitting testament to a complex and contradictory character. . . . Richards succeeds brilliantly in re-establishing Haeckel as a significant scientist and a major figure in the history of evolutionary thought.”—P. D. Smith, Times Literary Supplement

"The Tragic Sense of Life, by Robert J. Richards, provides not only a biography of the controversial German evolutionist Ernst Haeckel (1834–1919), but also an important piece of the emerging picture of the Darwinian Revolution in its international and intergenerational dimensions. . . . Richards’s analysis brings Haeckel and Darwin closer together than ever before, even for those of us who resist making Romantics of them both. By doing so, and by defending Haeckel from the excesses of his critics and bringing out the personal side of his science, this book marks a major rehabilitation of Haeckel as a mainstream Darwinian, and a full-blooded one at that. It writes Germany into the larger story of the international development of Darwinism in a new way, and it injects welcome doses of drama, romance and natural beauty into the story."

"Haeckel has now found his champion in historian Robert J Richards who sets out to change forever the general perception of this man, whom he regards as one of the greatest in the history of the life sciences. . . . Thanks to Richards’s magnificent biography, Haeckel will never again be discounted."